31243430131102 has 32 divisors (see below), whose sum is σ = 53626333068288. Its totient is φ = 13373502614496.

The previous prime is 31243430131093. The next prime is 31243430131181. The reversal of 31243430131102 is 20113103434213.

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, 135274123 + ... + 135504889.

It is an arithmetic number, because the mean of its divisors is an integer number (1675822908384).

Almost surely, 2^{31243430131102} is an apocalyptic number.

31243430131102 is a deficient number, since it is larger than the sum of its proper divisors (22382902937186).

31243430131102 is a wasteful number, since it uses less digits than its factorization.

31243430131102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242680.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 31243430131102 its reverse (20113103434213), we get a palindrome (51356533565315).

The spelling of 31243430131102 in words is "thirty-one trillion, two hundred forty-three billion, four hundred thirty million, one hundred thirty-one thousand, one hundred two".