31223240322 has 32 divisors (see below), whose sum is σ = 66250752000. Its totient is φ = 9782328528.

The previous prime is 31223240297. The next prime is 31223240353. The reversal of 31223240322 is 22304232213.

It is a junction number, because it is equal to n+sod(n) for n = 31223240292 and 31223240301.

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, 1063822 + ... + 1092777.

It is an arithmetic number, because the mean of its divisors is an integer number (2070336000).

Almost surely, 2^31223240322 is an apocalyptic number.

31223240322 is an abundant number, since it is smaller than the sum of its proper divisors (35027511678).

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

31223240322 is a wasteful number, since it uses less digits than its factorization.

31223240322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156750.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31223240322 its reverse (22304232213), we get a palindrome (53527472535).

The spelling of 31223240322 in words is "thirty-one billion, two hundred twenty-three million, two hundred forty thousand, three hundred twenty-two".