231331202969 has 2 divisors, whose sum is σ = 231331202970. Its totient is φ = 231331202968.

The previous prime is 231331202953. The next prime is 231331203031. The reversal of 231331202969 is 969202133132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162540404569 + 68790798400 = 403163^2 + 262280^2 .

It is a cyclic number.

It is not a de Polignac number, because 231331202969 - 2⁴ = 231331202953 is a prime.

It is a super-2 number, since 2×231331202969² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (231331204969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665601484 + 115665601485.

It is an arithmetic number, because the mean of its divisors is an integer number (115665601485).

Almost surely, 2^231331202969 is an apocalyptic number.

It is an amenable number.

231331202969 is a deficient number, since it is larger than the sum of its proper divisors (1).

231331202969 is an equidigital number, since it uses as much as digits as its factorization.

231331202969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 231331202969 in words is "two hundred thirty-one billion, three hundred thirty-one million, two hundred two thousand, nine hundred sixty-nine".