31312133222 has 8 divisors (see below), whose sum is σ = 46973166672. Its totient is φ = 15654411000.

The previous prime is 31312133219. The next prime is 31312133239. The reversal of 31312133222 is 22233121313.

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

It is a super-2 number, since 2×31312133222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804029 + ... + 842072.

It is an arithmetic number, because the mean of its divisors is an integer number (5871645834).

Almost surely, 2^31312133222 is an apocalyptic number.

31312133222 is a deficient number, since it is larger than the sum of its proper divisors (15661033450).

31312133222 is a wasteful number, since it uses less digits than its factorization.

31312133222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655614.

The product of its digits is 1296, while the sum is 23.

Adding to 31312133222 its reverse (22233121313), we get a palindrome (53545254535).

The spelling of 31312133222 in words is "thirty-one billion, three hundred twelve million, one hundred thirty-three thousand, two hundred twenty-two".