1020823631 has 2 divisors, whose sum is σ = 1020823632. Its totient is φ = 1020823630.

The previous prime is 1020823567. The next prime is 1020823637. The reversal of 1020823631 is 1363280201.

1020823631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020823631 - 2⁶ = 1020823567 is a prime.

It is a super-2 number, since 2×1020823631² = 2084161771216048322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020823631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020823637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510411815 + 510411816.

It is an arithmetic number, because the mean of its divisors is an integer number (510411816).

Almost surely, 2^1020823631 is an apocalyptic number.

1020823631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020823631 is an equidigital number, since it uses as much as digits as its factorization.

1020823631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1020823631 is about 31950.3306868646. The cubic root of 1020823631 is about 1006.8935796947.

The spelling of 1020823631 in words is "one billion, twenty million, eight hundred twenty-three thousand, six hundred thirty-one".