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31234131299 = 72637431251
BaseRepresentation
bin11101000101101100…
…110000010101100011
32222121202112021020202
4131011230300111203
51002431414200144
622203155455415
72154003510200
oct350554602543
988552467222
1031234131299
1112278942158
1260782b756b
132c39c79ac7
141724300ca7
15c2c15764e
hex745b30563

31234131299 has 6 divisors (see below), whose sum is σ = 36333581364. Its totient is φ = 26772112500.

The previous prime is 31234131281. The next prime is 31234131311. The reversal of 31234131299 is 99213143213.

It is not a de Polignac number, because 31234131299 - 28 = 31234131043 is a prime.

It is a super-3 number, since 3×312341312993 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234131199) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 318715577 + ... + 318715674.

It is an arithmetic number, because the mean of its divisors is an integer number (6055596894).

Almost surely, 231234131299 is an apocalyptic number.

31234131299 is a deficient number, since it is larger than the sum of its proper divisors (5099450065).

31234131299 is an equidigital number, since it uses as much as digits as its factorization.

31234131299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637431265 (or 637431258 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The spelling of 31234131299 in words is "thirty-one billion, two hundred thirty-four million, one hundred thirty-one thousand, two hundred ninety-nine".

Divisors: 1 7 49 637431251 4462018757 31234131299