3131242054512 has 160 divisors (see below), whose sum is σ = 9516190258176. Its totient is φ = 874675584000.

The previous prime is 3131242054487. The next prime is 3131242054517. The reversal of 3131242054512 is 2154502421313.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131242054517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4720137 + ... + 5342487.

Almost surely, 2^{3131242054512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131242054512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4758095129088).

3131242054512 is an abundant number, since it is smaller than the sum of its proper divisors (6384948203664).

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

3131242054512 is a wasteful number, since it uses less digits than its factorization.

3131242054512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623119 (or 623113 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 3131242054512 its reverse (2154502421313), we get a palindrome (5285744475825).

The spelling of 3131242054512 in words is "three trillion, one hundred thirty-one billion, two hundred forty-two million, fifty-four thousand, five hundred twelve".