31145335144024 has 32 divisors (see below), whose sum is σ = 59648075881920. Its totient is φ = 15239271269376.

The previous prime is 31145335144009. The next prime is 31145335144037. The reversal of 31145335144024 is 42044153354113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2822379 + ... + 8381914.

It is an arithmetic number, because the mean of its divisors is an integer number (1864002371310).

Almost surely, 2^{31145335144024} is an apocalyptic number.

It is an amenable number.

31145335144024 is a deficient number, since it is larger than the sum of its proper divisors (28502740737896).

31145335144024 is a wasteful number, since it uses less digits than its factorization.

31145335144024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11211739 (or 11211735 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 31145335144024 its reverse (42044153354113), we get a palindrome (73189488498137).

The spelling of 31145335144024 in words is "thirty-one trillion, one hundred forty-five billion, three hundred thirty-five million, one hundred forty-four thousand, twenty-four".