31231523314240 has 112 divisors (see below), whose sum is σ = 80104844128320. Its totient is φ = 11559868508160.

The previous prime is 31231523314181. The next prime is 31231523314261. The reversal of 31231523314240 is 4241332513213.

It is a super-3 number, since 3×31231523314240³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31231523314196 and 31231523314205.

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 15 ways as a sum of consecutive naturals, for example, 59468371 + ... + 59991250.

Almost surely, 2^{31231523314240} is an apocalyptic number.

It is an amenable number.

31231523314240 is an abundant number, since it is smaller than the sum of its proper divisors (48873320814080).

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

31231523314240 is a wasteful number, since it uses less digits than its factorization.

31231523314240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119459700 (or 119459690 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 31231523314240 its reverse (4241332513213), we get a palindrome (35472855827453).

The spelling of 31231523314240 in words is "thirty-one trillion, two hundred thirty-one billion, five hundred twenty-three million, three hundred fourteen thousand, two hundred forty".