31312023432222 has 64 divisors (see below), whose sum is σ = 67477825800000. Its totient is φ = 9629249476608.

The previous prime is 31312023432211. The next prime is 31312023432223. The reversal of 31312023432222 is 22223432021313.

It is a super-2 number, since 2×31312023432222² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31312023432222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312023432223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1760181304 + ... + 1760199092.

It is an arithmetic number, because the mean of its divisors is an integer number (1054341028125).

Almost surely, 2^{31312023432222} is an apocalyptic number.

31312023432222 is an abundant number, since it is smaller than the sum of its proper divisors (36165802367778).

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

31312023432222 is a wasteful number, since it uses less digits than its factorization.

31312023432222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28765.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 31312023432222 its reverse (22223432021313), we get a palindrome (53535455453535).

The spelling of 31312023432222 in words is "thirty-one trillion, three hundred twelve billion, twenty-three million, four hundred thirty-two thousand, two hundred twenty-two".