31455305142 has 16 divisors (see below), whose sum is σ = 62913898800. Its totient is φ = 10484553632.

The previous prime is 31455305137. The next prime is 31455305159. The reversal of 31455305142 is 24150355413.

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, 2517 + ... + 250832.

It is an arithmetic number, because the mean of its divisors is an integer number (3932118675).

Almost surely, 2^31455305142 is an apocalyptic number.

31455305142 is an abundant number, since it is smaller than the sum of its proper divisors (31458593658).

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

31455305142 is a wasteful number, since it uses less digits than its factorization.

31455305142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274047.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 31455305142 in words is "thirty-one billion, four hundred fifty-five million, three hundred five thousand, one hundred forty-two".