31231021013022 has 8 divisors (see below), whose sum is σ = 62462042026056. Its totient is φ = 10410340337672.

The previous prime is 31231021012993. The next prime is 31231021013063. The reversal of 31231021013022 is 22031012013213.

It is a sphenic number, since it is the product of 3 distinct primes.

31231021013022 is an admirable number.

It is a super-2 number, since 2×31231021013022² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31231021013022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2602585084413 + ... + 2602585084424.

It is an arithmetic number, because the mean of its divisors is an integer number (7807755253257).

Almost surely, 2^{31231021013022} is an apocalyptic number.

31231021013022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31231021013022 is a wasteful number, since it uses less digits than its factorization.

31231021013022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205170168842.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31231021013022 its reverse (22031012013213), we get a palindrome (53262033026235).

The spelling of 31231021013022 in words is "thirty-one trillion, two hundred thirty-one billion, twenty-one million, thirteen thousand, twenty-two".