31021013022 has 16 divisors (see below), whose sum is σ = 62400652560. Its totient is φ = 10280566592.

The previous prime is 31021012951. The next prime is 31021013027. The reversal of 31021013022 is 22031012013.

It is a super-2 number, since 2×31021013022² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31021012992 and 31021013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31021013027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14941647 + ... + 14943722.

It is an arithmetic number, because the mean of its divisors is an integer number (3900040785).

Almost surely, 2^31021013022 is an apocalyptic number.

31021013022 is an abundant number, since it is smaller than the sum of its proper divisors (31379639538).

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

31021013022 is a wasteful number, since it uses less digits than its factorization.

31021013022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29885547.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31021013022 its reverse (22031012013), we get a palindrome (53052025035).

The spelling of 31021013022 in words is "thirty-one billion, twenty-one million, thirteen thousand, twenty-two".