31405155045 has 32 divisors (see below), whose sum is σ = 55381415040. Its totient is φ = 15069757440.

The previous prime is 31405154971. The next prime is 31405155053. The reversal of 31405155045 is 54055150413.

It is not a de Polignac number, because 31405155045 - 2²¹ = 31403057893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 31405154997 and 31405155015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 965100 + ... + 997109.

It is an arithmetic number, because the mean of its divisors is an integer number (1730669220).

Almost surely, 2^31405155045 is an apocalyptic number.

It is an amenable number.

31405155045 is a deficient number, since it is larger than the sum of its proper divisors (23976259995).

31405155045 is a wasteful number, since it uses less digits than its factorization.

31405155045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962325.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 31405155045 in words is "thirty-one billion, four hundred five million, one hundred fifty-five thousand, forty-five".