31222114440 has 64 divisors (see below), whose sum is σ = 102181469760. Its totient is φ = 7568997120.

The previous prime is 31222114397. The next prime is 31222114457. The reversal of 31222114440 is 4441122213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31222114440.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11825239 + ... + 11827878.

It is an arithmetic number, because the mean of its divisors is an integer number (1596585465).

Almost surely, 2^31222114440 is an apocalyptic number.

31222114440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31222114440 is an abundant number, since it is smaller than the sum of its proper divisors (70959355320).

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

31222114440 is a wasteful number, since it uses less digits than its factorization.

31222114440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23653142 (or 23653138 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31222114440 its reverse (4441122213), we get a palindrome (35663236653).

The spelling of 31222114440 in words is "thirty-one billion, two hundred twenty-two million, one hundred fourteen thousand, four hundred forty".