31021304022 has 40 divisors (see below), whose sum is σ = 69523920576. Its totient is φ = 10338468048.

The previous prime is 31021303997. The next prime is 31021304057. The reversal of 31021304022 is 22040312013.

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 = 31021303986 and 31021304004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1017403 + ... + 1047449.

Almost surely, 2^31021304022 is an apocalyptic number.

31021304022 is an abundant number, since it is smaller than the sum of its proper divisors (38502616554).

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

31021304022 is a wasteful number, since it uses less digits than its factorization.

31021304022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36434 (or 36425 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31021304022 its reverse (22040312013), we get a palindrome (53061616035).

The spelling of 31021304022 in words is "thirty-one billion, twenty-one million, three hundred four thousand, twenty-two".