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31022103044 = 2240357192173
BaseRepresentation
bin11100111001000011…
…111011101000000100
32222001222120010011102
4130321003323220010
51002013124244134
622130143155232
72145520345052
oct347103735004
988058503142
1031022103044
111217a194199
1260192a5b18
132c050709ba
1417040ab1d2
15c1872437e
hex7390fba04

31022103044 has 12 divisors (see below), whose sum is σ = 54290308044. Its totient is φ = 15510586464.

The previous prime is 31022103043. The next prime is 31022103061. The reversal of 31022103044 is 44030122013.

It can be written as a sum of positive squares in 2 ways, for example, as 2024100100 + 28998002944 = 44990^2 + 170288^2 .

It is not an unprimeable number, because it can be changed into a prime (31022103043) 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 3 ways as a sum of consecutive naturals, for example, 65342 + ... + 257514.

It is an arithmetic number, because the mean of its divisors is an integer number (4524192337).

Almost surely, 231022103044 is an apocalyptic number.

It is an amenable number.

31022103044 is a deficient number, since it is larger than the sum of its proper divisors (23268205000).

31022103044 is a wasteful number, since it uses less digits than its factorization.

31022103044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232534 (or 232532 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31022103044 its reverse (44030122013), we get a palindrome (75052225057).

The spelling of 31022103044 in words is "thirty-one billion, twenty-two million, one hundred three thousand, forty-four".

Divisors: 1 2 4 40357 80714 161428 192173 384346 768692 7755525761 15511051522 31022103044