31556289342 has 16 divisors (see below), whose sum is σ = 64580313600. Its totient is φ = 10274140632.

The previous prime is 31556289337. The next prime is 31556289353. The reversal of 31556289342 is 24398265513.

It is a junction number, because it is equal to n+sod(n) for n = 31556289291 and 31556289300.

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, 61155342 + ... + 61155857.

It is an arithmetic number, because the mean of its divisors is an integer number (4036269600).

Almost surely, 2^31556289342 is an apocalyptic number.

31556289342 is an abundant number, since it is smaller than the sum of its proper divisors (33024024258).

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

31556289342 is a wasteful number, since it uses less digits than its factorization.

31556289342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122311247.

The product of its digits is 1555200, while the sum is 48.

The spelling of 31556289342 in words is "thirty-one billion, five hundred fifty-six million, two hundred eighty-nine thousand, three hundred forty-two".