31546521142 has 16 divisors (see below), whose sum is σ = 49829160960. Its totient is φ = 14937429672.

The previous prime is 31546521107. The next prime is 31546521151. The reversal of 31546521142 is 24112564513.

It is a junction number, because it is equal to n+sod(n) for n = 31546521098 and 31546521107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54678 + ... + 257065.

It is an arithmetic number, because the mean of its divisors is an integer number (3114322560).

Almost surely, 2^31546521142 is an apocalyptic number.

31546521142 is a deficient number, since it is larger than the sum of its proper divisors (18282639818).

31546521142 is a wasteful number, since it uses less digits than its factorization.

31546521142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314427.

The product of its digits is 28800, while the sum is 34.

The spelling of 31546521142 in words is "thirty-one billion, five hundred forty-six million, five hundred twenty-one thousand, one hundred forty-two".