31343022 has 24 divisors (see below), whose sum is σ = 68124576. Its totient is φ = 10414656.

The previous prime is 31342991. The next prime is 31343023. The reversal of 31343022 is 22034313.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31342986 and 31343004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3483 + ... + 8649.

It is an arithmetic number, because the mean of its divisors is an integer number (2838524).

Almost surely, 2^31343022 is an apocalyptic number.

31343022 is an abundant number, since it is smaller than the sum of its proper divisors (36781554).

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

31343022 is a wasteful number, since it uses less digits than its factorization.

31343022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512 (or 5509 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 31343022 is about 5598.4839019149. The cubic root of 31343022 is about 315.2924872139.

Adding to 31343022 its reverse (22034313), we get a palindrome (53377335).

The spelling of 31343022 in words is "thirty-one million, three hundred forty-three thousand, twenty-two".