1020431969 has 2 divisors, whose sum is σ = 1020431970. Its totient is φ = 1020431968.

The previous prime is 1020431959. The next prime is 1020431977. The reversal of 1020431969 is 9691340201.

1020431969 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 can be written as a sum of positive squares in only one way, i.e., 788935744 + 231496225 = 28088^2 + 15215^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020431969 - 2²⁴ = 1003654753 is a prime.

It is a super-2 number, since 2×1020431969² = 2082562806714433922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020431959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510215984 + 510215985.

It is an arithmetic number, because the mean of its divisors is an integer number (510215985).

Almost surely, 2^1020431969 is an apocalyptic number.

It is an amenable number.

1020431969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020431969 is an equidigital number, since it uses as much as digits as its factorization.

1020431969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1020431969 is about 31944.2008665110. The cubic root of 1020431969 is about 1006.7647907485.

The spelling of 1020431969 in words is "one billion, twenty million, four hundred thirty-one thousand, nine hundred sixty-nine".