31031201303252 has 12 divisors (see below), whose sum is σ = 55629104775636. Its totient is φ = 15137171367360.

The previous prime is 31031201303251. The next prime is 31031201303369. The reversal of 31031201303252 is 25230310213013.

It can be written as a sum of positive squares in 2 ways, for example, as 11766862041796 + 19264339261456 = 3430286^2 + 4389116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031201303251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94607320883 + ... + 94607321210.

It is an arithmetic number, because the mean of its divisors is an integer number (4635758731303).

Almost surely, 2^{31031201303252} is an apocalyptic number.

It is an amenable number.

31031201303252 is a deficient number, since it is larger than the sum of its proper divisors (24597903472384).

31031201303252 is a wasteful number, since it uses less digits than its factorization.

31031201303252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189214642138 (or 189214642136 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 31031201303252 its reverse (25230310213013), we get a palindrome (56261511516265).

The spelling of 31031201303252 in words is "thirty-one trillion, thirty-one billion, two hundred one million, three hundred three thousand, two hundred fifty-two".