31231303302102 has 16 divisors (see below), whose sum is σ = 64477529398272. Its totient is φ = 10074613968360.

The previous prime is 31231303302097. The next prime is 31231303302149. The reversal of 31231303302102 is 20120330313213.

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, 83955116218 + ... + 83955116589.

It is an arithmetic number, because the mean of its divisors is an integer number (4029845587392).

Almost surely, 2^{31231303302102} is an apocalyptic number.

31231303302102 is an abundant number, since it is smaller than the sum of its proper divisors (33246226096170).

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

31231303302102 is a wasteful number, since it uses less digits than its factorization.

31231303302102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167910232843.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31231303302102 its reverse (20120330313213), we get a palindrome (51351633615315).

The spelling of 31231303302102 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred three million, three hundred two thousand, one hundred two".