1020323831 has 2 divisors, whose sum is σ = 1020323832. Its totient is φ = 1020323830.

The previous prime is 1020323819. The next prime is 1020323879. The reversal of 1020323831 is 1383230201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020323831 - 2⁶ = 1020323767 is a prime.

It is a super-2 number, since 2×1020323831² = 2082121440213033122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020323797 and 1020323806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020323131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510161915 + 510161916.

It is an arithmetic number, because the mean of its divisors is an integer number (510161916).

Almost surely, 2^1020323831 is an apocalyptic number.

1020323831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020323831 is an equidigital number, since it uses as much as digits as its factorization.

1020323831 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 23.

The square root of 1020323831 is about 31942.5082139772. The cubic root of 1020323831 is about 1006.7292262750.

The spelling of 1020323831 in words is "one billion, twenty million, three hundred twenty-three thousand, eight hundred thirty-one".