31213001133210 has 32 divisors (see below), whose sum is σ = 80673602929920. Its totient is φ = 7683200278848.

The previous prime is 31213001133191. The next prime is 31213001133229. The reversal of 31213001133210 is 1233110031213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31213001133191) and next prime (31213001133229).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40016667730 + ... + 40016668509.

It is an arithmetic number, because the mean of its divisors is an integer number (2521050091560).

Almost surely, 2^{31213001133210} is an apocalyptic number.

31213001133210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31213001133210 is an abundant number, since it is smaller than the sum of its proper divisors (49460601796710).

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

31213001133210 is a wasteful number, since it uses less digits than its factorization.

31213001133210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80033336262.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31213001133210 its reverse (1233110031213), we get a palindrome (32446111164423).

The spelling of 31213001133210 in words is "thirty-one trillion, two hundred thirteen billion, one million, one hundred thirty-three thousand, two hundred ten".