31231321122 has 16 divisors (see below), whose sum is σ = 62607572352. Its totient is φ = 10386285360.

The previous prime is 31231321087. The next prime is 31231321123. The reversal of 31231321122 is 22112313213.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31231321123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6035953 + ... + 6041124.

It is an arithmetic number, because the mean of its divisors is an integer number (3912973272).

Almost surely, 2^31231321122 is an apocalyptic number.

31231321122 is an abundant number, since it is smaller than the sum of its proper divisors (31376251230).

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

31231321122 is a wasteful number, since it uses less digits than its factorization.

31231321122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12077513.

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

Adding to 31231321122 its reverse (22112313213), we get a palindrome (53343634335).

The spelling of 31231321122 in words is "thirty-one billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-two".