1022009831 has 2 divisors, whose sum is σ = 1022009832. Its totient is φ = 1022009830.

The previous prime is 1022009719. The next prime is 1022009897. The reversal of 1022009831 is 1389002201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022009831 - 2¹⁸ = 1021747687 is a prime.

It is a super-2 number, since 2×1022009831² = 2089008189321297122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022009831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022000831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511004915 + 511004916.

It is an arithmetic number, because the mean of its divisors is an integer number (511004916).

Almost surely, 2^1022009831 is an apocalyptic number.

1022009831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022009831 is an equidigital number, since it uses as much as digits as its factorization.

1022009831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1022009831 is about 31968.8884855260. Note that the first 3 decimals coincide. The cubic root of 1022009831 is about 1007.2834331435.

The spelling of 1022009831 in words is "one billion, twenty-two million, nine thousand, eight hundred thirty-one".