31213214021010 has 64 divisors (see below), whose sum is σ = 85731150016512. Its totient is φ = 7124635336896.

The previous prime is 31213214020931. The next prime is 31213214021047. The reversal of 31213214021010 is 1012041231213.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 102071782 + ... + 102377121.

It is an arithmetic number, because the mean of its divisors is an integer number (1339549219008).

Almost surely, 2^{31213214021010} is an apocalyptic number.

31213214021010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31213214021010 is an abundant number, since it is smaller than the sum of its proper divisors (54517935995502).

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

31213214021010 is a wasteful number, since it uses less digits than its factorization.

31213214021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204449647.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31213214021010 its reverse (1012041231213), we get a palindrome (32225255252223).

The spelling of 31213214021010 in words is "thirty-one trillion, two hundred thirteen billion, two hundred fourteen million, twenty-one thousand, ten".