31903791129 has 24 divisors (see below), whose sum is σ = 53452651200. Its totient is φ = 17958634848.

The previous prime is 31903791121. The next prime is 31903791131. The reversal of 31903791129 is 92119730913.

It is not a de Polignac number, because 31903791129 - 2³ = 31903791121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31903791121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3774954 + ... + 3783395.

It is an arithmetic number, because the mean of its divisors is an integer number (2227193800).

Almost surely, 2^31903791129 is an apocalyptic number.

It is an amenable number.

31903791129 is a deficient number, since it is larger than the sum of its proper divisors (21548860071).

31903791129 is a wasteful number, since it uses less digits than its factorization.

31903791129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7558429 (or 7558426 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The spelling of 31903791129 in words is "thirty-one billion, nine hundred three million, seven hundred ninety-one thousand, one hundred twenty-nine".