31988107542 has 32 divisors (see below), whose sum is σ = 64904289408. Its totient is φ = 10508256576.

The previous prime is 31988107531. The next prime is 31988107577. The reversal of 31988107542 is 24570188913.

It is a junction number, because it is equal to n+sod(n) for n = 31988107491 and 31988107500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533493 + ... + 590415.

It is an arithmetic number, because the mean of its divisors is an integer number (2028259044).

Almost surely, 2^31988107542 is an apocalyptic number.

31988107542 is an abundant number, since it is smaller than the sum of its proper divisors (32916181866).

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

31988107542 is a wasteful number, since it uses less digits than its factorization.

31988107542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58284.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 31988107542 in words is "thirty-one billion, nine hundred eighty-eight million, one hundred seven thousand, five hundred forty-two".