31013131231302 has 16 divisors (see below), whose sum is σ = 67665013595712. Its totient is φ = 9397918554920.

The previous prime is 31013131231273. The next prime is 31013131231319. The reversal of 31013131231302 is 20313213131013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234947963808 + ... + 234947963939.

It is an arithmetic number, because the mean of its divisors is an integer number (4229063349732).

Almost surely, 2^{31013131231302} is an apocalyptic number.

31013131231302 is an abundant number, since it is smaller than the sum of its proper divisors (36651882364410).

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

31013131231302 is a wasteful number, since it uses less digits than its factorization.

31013131231302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469895927763.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31013131231302 its reverse (20313213131013), we get a palindrome (51326344362315).

The spelling of 31013131231302 in words is "thirty-one trillion, thirteen billion, one hundred thirty-one million, two hundred thirty-one thousand, three hundred two".