231008969 has 2 divisors, whose sum is σ = 231008970. Its totient is φ = 231008968.

The previous prime is 231008963. The next prime is 231009043. The reversal of 231008969 is 969800132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134281744 + 96727225 = 11588^2 + 9835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231008969 is a prime.

It is a super-2 number, since 2×231008969² = 106730287516885922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231008963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115504484 + 115504485.

It is an arithmetic number, because the mean of its divisors is an integer number (115504485).

Almost surely, 2^231008969 is an apocalyptic number.

It is an amenable number.

231008969 is a deficient number, since it is larger than the sum of its proper divisors (1).

231008969 is an equidigital number, since it uses as much as digits as its factorization.

231008969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 231008969 is about 15198.9792091443. The cubic root of 231008969 is about 613.5871849778.

The spelling of 231008969 in words is "two hundred thirty-one million, eight thousand, nine hundred sixty-nine".