31743401538 has 16 divisors (see below), whose sum is σ = 67221321120. Its totient is φ = 9958714176.

The previous prime is 31743401513. The next prime is 31743401549. The reversal of 31743401538 is 83510434713.

It is a junction number, because it is equal to n+sod(n) for n = 31743401496 and 31743401505.

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 7 ways as a sum of consecutive naturals, for example, 155604808 + ... + 155605011.

It is an arithmetic number, because the mean of its divisors is an integer number (4201332570).

Almost surely, 2^31743401538 is an apocalyptic number.

31743401538 is an abundant number, since it is smaller than the sum of its proper divisors (35477919582).

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

31743401538 is a wasteful number, since it uses less digits than its factorization.

31743401538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311209841.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 31743401538 in words is "thirty-one billion, seven hundred forty-three million, four hundred one thousand, five hundred thirty-eight".