31324311222 has 128 divisors (see below), whose sum is σ = 67520977920. Its totient is φ = 9672929280.

The previous prime is 31324311203. The next prime is 31324311247. The reversal of 31324311222 is 22211342313.

It is a junction number, because it is equal to n+sod(n) for n = 31324311192 and 31324311201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76587354 + ... + 76587762.

It is an arithmetic number, because the mean of its divisors is an integer number (527507640).

Almost surely, 2^31324311222 is an apocalyptic number.

31324311222 is an abundant number, since it is smaller than the sum of its proper divisors (36196666698).

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

31324311222 is a wasteful number, since it uses less digits than its factorization.

31324311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its digits is 1728, while the sum is 24.

Adding to 31324311222 its reverse (22211342313), we get a palindrome (53535653535).

The spelling of 31324311222 in words is "thirty-one billion, three hundred twenty-four million, three hundred eleven thousand, two hundred twenty-two".