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31244024130 = 23511193149031
BaseRepresentation
bin11101000110010010…
…011111100101000010
32222122110010212122220
4131012102133211002
51002441432233010
622204151511510
72154153552234
oct350622374502
988573125586
1031244024130
1112283489850
12607b688596
132c3c031957
141725758254
15c2ce5d970
hex74649f942

31244024130 has 64 divisors (see below), whose sum is σ = 81846567936. Its totient is φ = 7570232000.

The previous prime is 31244024093. The next prime is 31244024143. The reversal of 31244024130 is 3142044213.

It is a self number, because there is not a number n which added to its sum of digits gives 31244024130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 612715 + ... + 661745.

It is an arithmetic number, because the mean of its divisors is an integer number (1278852624).

Almost surely, 231244024130 is an apocalyptic number.

31244024130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31244024130 is an abundant number, since it is smaller than the sum of its proper divisors (50602543806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31244024130 is a wasteful number, since it uses less digits than its factorization.

31244024130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50983.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31244024130 its reverse (3142044213), we get a palindrome (34386068343).

The spelling of 31244024130 in words is "thirty-one billion, two hundred forty-four million, twenty-four thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 1931 3862 5793 9655 11586 19310 21241 28965 42482 49031 57930 63723 98062 106205 127446 147093 212410 245155 294186 318615 490310 539341 637230 735465 1078682 1470930 1618023 2696705 3236046 5393410 8090115 16180230 94678861 189357722 284036583 473394305 568073166 946788610 1041467471 1420182915 2082934942 2840365830 3124402413 5207337355 6248804826 10414674710 15622012065 31244024130