31331013322 has 32 divisors (see below), whose sum is σ = 54034848000. Its totient is φ = 13346581248.

The previous prime is 31331013317. The next prime is 31331013347. The reversal of 31331013322 is 22331013313.

It is a junction number, because it is equal to n+sod(n) for n = 31331013293 and 31331013302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3039954 + ... + 3050242.

It is an arithmetic number, because the mean of its divisors is an integer number (1688589000).

Almost surely, 2^31331013322 is an apocalyptic number.

31331013322 is a deficient number, since it is larger than the sum of its proper divisors (22703834678).

31331013322 is a wasteful number, since it uses less digits than its factorization.

31331013322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11590.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31331013322 its reverse (22331013313), we get a palindrome (53662026635).

Subtracting from 31331013322 its reverse (22331013313), we obtain a palindrome (9000000009).

The spelling of 31331013322 in words is "thirty-one billion, three hundred thirty-one million, thirteen thousand, three hundred twenty-two".