23403202957 has 2 divisors, whose sum is σ = 23403202958. Its totient is φ = 23403202956.

The previous prime is 23403202939. The next prime is 23403203059. The reversal of 23403202957 is 75920230432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12657600036 + 10745602921 = 112506^2 + 103661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23403202957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23403202357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701601478 + 11701601479.

It is an arithmetic number, because the mean of its divisors is an integer number (11701601479).

Almost surely, 2^23403202957 is an apocalyptic number.

It is an amenable number.

23403202957 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403202957 is an equidigital number, since it uses as much as digits as its factorization.

23403202957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 23403202957 in words is "twenty-three billion, four hundred three million, two hundred two thousand, nine hundred fifty-seven".