31055523402 has 16 divisors (see below), whose sum is σ = 62137606752. Its totient is φ = 10347414480.

The previous prime is 31055523397. The next prime is 31055523403. The reversal of 31055523402 is 20432555013.

It is a self number, because there is not a number n which added to its sum of digits gives 31055523402.

It is not an unprimeable number, because it can be changed into a prime (31055523403) 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 7 ways as a sum of consecutive naturals, for example, 1091448 + ... + 1119539.

It is an arithmetic number, because the mean of its divisors is an integer number (3883600422).

Almost surely, 2^31055523402 is an apocalyptic number.

31055523402 is an abundant number, since it is smaller than the sum of its proper divisors (31082083350).

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

31055523402 is a wasteful number, since it uses less digits than its factorization.

31055523402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213333.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 31055523402 in words is "thirty-one billion, fifty-five million, five hundred twenty-three thousand, four hundred two".