31313144022 has 16 divisors (see below), whose sum is σ = 62680617840. Its totient is φ = 10428659712.

The previous prime is 31313143951. The next prime is 31313144087. The reversal of 31313144022 is 22044131313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31313143983 and 31313144001.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2256247 + ... + 2270082.

It is an arithmetic number, because the mean of its divisors is an integer number (3917538615).

Almost surely, 2^31313144022 is an apocalyptic number.

31313144022 is an abundant number, since it is smaller than the sum of its proper divisors (31367473818).

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

31313144022 is a wasteful number, since it uses less digits than its factorization.

31313144022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527487.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31313144022 its reverse (22044131313), we get a palindrome (53357275335).

The spelling of 31313144022 in words is "thirty-one billion, three hundred thirteen million, one hundred forty-four thousand, twenty-two".