31144355252 has 24 divisors (see below), whose sum is σ = 55463241120. Its totient is φ = 15298066080.

The previous prime is 31144355239. The next prime is 31144355257. The reversal of 31144355252 is 25255344113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144355257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318218 + ... + 404414.

It is an arithmetic number, because the mean of its divisors is an integer number (2310968380).

Almost surely, 2^31144355252 is an apocalyptic number.

It is an amenable number.

31144355252 is a deficient number, since it is larger than the sum of its proper divisors (24318885868).

31144355252 is a wasteful number, since it uses less digits than its factorization.

31144355252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87791 (or 87789 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 31144355252 its reverse (25255344113), we get a palindrome (56399699365).

The spelling of 31144355252 in words is "thirty-one billion, one hundred forty-four million, three hundred fifty-five thousand, two hundred fifty-two".