31031534222 has 32 divisors (see below), whose sum is σ = 53097835392. Its totient is φ = 13474358784.

The previous prime is 31031534201. The next prime is 31031534257. The reversal of 31031534222 is 22243513013.

It is a happy number.

It is a super-2 number, since 2×31031534222² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 31031534191 and 31031534200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210328 + ... + 1235700.

It is an arithmetic number, because the mean of its divisors is an integer number (1659307356).

Almost surely, 2^31031534222 is an apocalyptic number.

31031534222 is a deficient number, since it is larger than the sum of its proper divisors (22066301170).

31031534222 is a wasteful number, since it uses less digits than its factorization.

31031534222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28172.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 31031534222 in words is "thirty-one billion, thirty-one million, five hundred thirty-four thousand, two hundred twenty-two".