31200131131444 has 48 divisors (see below), whose sum is σ = 61063353562176. Its totient is φ = 13825391225600.

The previous prime is 31200131131343. The next prime is 31200131131501. The reversal of 31200131131444 is 44413113100213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4258459 + ... + 8974114.

It is an arithmetic number, because the mean of its divisors is an integer number (1272153199212).

Almost surely, 2^{31200131131444} is an apocalyptic number.

It is an amenable number.

31200131131444 is a deficient number, since it is larger than the sum of its proper divisors (29863222430732).

31200131131444 is a wasteful number, since it uses less digits than its factorization.

31200131131444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13233936 (or 13233934 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 31200131131444 its reverse (44413113100213), we get a palindrome (75613244231657).

The spelling of 31200131131444 in words is "thirty-one trillion, two hundred billion, one hundred thirty-one million, one hundred thirty-one thousand, four hundred forty-four".