31405155042 has 32 divisors (see below), whose sum is σ = 63078912000. Its totient is φ = 10423715408.

The previous prime is 31405154971. The next prime is 31405155053. The reversal of 31405155042 is 24055150413.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330459 + ... + 1353857.

It is an arithmetic number, because the mean of its divisors is an integer number (1971216000).

Almost surely, 2^31405155042 is an apocalyptic number.

31405155042 is an abundant number, since it is smaller than the sum of its proper divisors (31673756958).

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

31405155042 is a wasteful number, since it uses less digits than its factorization.

31405155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24350.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 31405155042 in words is "thirty-one billion, four hundred five million, one hundred fifty-five thousand, forty-two".