31231320122010 has 32 divisors (see below), whose sum is σ = 75268788261120. Its totient is φ = 8293505369408.

The previous prime is 31231320121961. The next prime is 31231320122047. The reversal of 31231320122010 is 1022102313213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177909157 + ... + 2177923496.

It is an arithmetic number, because the mean of its divisors is an integer number (2352149633160).

Almost surely, 2^{31231320122010} is an apocalyptic number.

31231320122010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31231320122010 is an abundant number, since it is smaller than the sum of its proper divisors (44037468139110).

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

31231320122010 is a wasteful number, since it uses less digits than its factorization.

31231320122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355832902.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31231320122010 its reverse (1022102313213), we get a palindrome (32253422435223).

The spelling of 31231320122010 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty million, one hundred twenty-two thousand, ten".