31231313422 has 8 divisors (see below), whose sum is σ = 49312600200. Its totient is φ = 14793780024.

The previous prime is 31231313401. The next prime is 31231313423. The reversal of 31231313422 is 22431313213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231313423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410938297 + ... + 410938372.

It is an arithmetic number, because the mean of its divisors is an integer number (6164075025).

Almost surely, 2^31231313422 is an apocalyptic number.

31231313422 is a deficient number, since it is larger than the sum of its proper divisors (18081286778).

31231313422 is a wasteful number, since it uses less digits than its factorization.

31231313422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821876690.

The product of its digits is 2592, while the sum is 25.

Adding to 31231313422 its reverse (22431313213), we get a palindrome (53662626635).

The spelling of 31231313422 in words is "thirty-one billion, two hundred thirty-one million, three hundred thirteen thousand, four hundred twenty-two".