23400000257 has 2 divisors, whose sum is σ = 23400000258. Its totient is φ = 23400000256.

The previous prime is 23400000229. The next prime is 23400000287. The reversal of 23400000257 is 75200000432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23162100481 + 237899776 = 152191^2 + 15424^2 .

It is a cyclic number.

It is not a de Polignac number, because 23400000257 - 2¹⁶ = 23399934721 is a prime.

It is not a weakly prime, because it can be changed into another prime (23400000287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700000128 + 11700000129.

It is an arithmetic number, because the mean of its divisors is an integer number (11700000129).

Almost surely, 2^23400000257 is an apocalyptic number.

It is an amenable number.

23400000257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23400000257 is an equidigital number, since it uses as much as digits as its factorization.

23400000257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 23.

Adding to 23400000257 its reverse (75200000432), we get a palindrome (98600000689).

The spelling of 23400000257 in words is "twenty-three billion, four hundred million, two hundred fifty-seven", and thus it is an aban number.