1022031981 has 12 divisors (see below), whose sum is σ = 1477783008. Its totient is φ = 680655624.

The previous prime is 1022031947. The next prime is 1022032009. The reversal of 1022031981 is 1891302201.

It is not a de Polignac number, because 1022031981 - 2⁶ = 1022031917 is a prime.

It is a super-2 number, since 2×1022031981² = 2089098740373568722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022031931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48915 + ... + 66608.

It is an arithmetic number, because the mean of its divisors is an integer number (123148584).

Almost surely, 2^1022031981 is an apocalyptic number.

It is an amenable number.

1022031981 is a deficient number, since it is larger than the sum of its proper divisors (455751027).

1022031981 is a wasteful number, since it uses less digits than its factorization.

1022031981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116512 (or 116509 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1022031981 is about 31969.2349142109. The cubic root of 1022031981 is about 1007.2907100359.

The spelling of 1022031981 in words is "one billion, twenty-two million, thirty-one thousand, nine hundred eighty-one".