31815053743 has 16 divisors (see below), whose sum is σ = 35125437600. Its totient is φ = 28575866880.

The previous prime is 31815053731. The next prime is 31815053773. The reversal of 31815053743 is 34735051813.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-31815053743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31815053696 and 31815053705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31815053713) by changing a digit.

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, 385663 + ... + 460831.

It is an arithmetic number, because the mean of its divisors is an integer number (2195339850).

Almost surely, 2^31815053743 is an apocalyptic number.

31815053743 is a deficient number, since it is larger than the sum of its proper divisors (3310383857).

31815053743 is a wasteful number, since it uses less digits than its factorization.

31815053743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75642.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 31815053743 in words is "thirty-one billion, eight hundred fifteen million, fifty-three thousand, seven hundred forty-three".