31231301210102 has 64 divisors (see below), whose sum is σ = 56156553953280. Its totient is φ = 12743475704064.

The previous prime is 31231301210063. The next prime is 31231301210119. The reversal of 31231301210102 is 20101210313213.

It is a happy number.

It is a super-2 number, since 2×31231301210102² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138089003 + ... + 138314985.

It is an arithmetic number, because the mean of its divisors is an integer number (877446155520).

Almost surely, 2^{31231301210102} is an apocalyptic number.

31231301210102 is a deficient number, since it is larger than the sum of its proper divisors (24925252743178).

31231301210102 is a wasteful number, since it uses less digits than its factorization.

31231301210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230757.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31231301210102 its reverse (20101210313213), we get a palindrome (51332511523315).

The spelling of 31231301210102 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred one million, two hundred ten thousand, one hundred two".