31312040322 has 8 divisors (see below), whose sum is σ = 62624080656. Its totient is φ = 10437346772.

The previous prime is 31312040293. The next prime is 31312040323. The reversal of 31312040322 is 22304021313.

It is a sphenic number, since it is the product of 3 distinct primes.

31312040322 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31312040323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609336688 + ... + 2609336699.

It is an arithmetic number, because the mean of its divisors is an integer number (7828010082).

Almost surely, 2^31312040322 is an apocalyptic number.

31312040322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31312040322 is a wasteful number, since it uses less digits than its factorization.

31312040322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218673392.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31312040322 its reverse (22304021313), we get a palindrome (53616061635).

The spelling of 31312040322 in words is "thirty-one billion, three hundred twelve million, forty thousand, three hundred twenty-two".