23315140357 has 2 divisors, whose sum is σ = 23315140358. Its totient is φ = 23315140356.

The previous prime is 23315140337. The next prime is 23315140423. The reversal of 23315140357 is 75304151332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17288568196 + 6026572161 = 131486^2 + 77631^2 .

It is a cyclic number.

It is not a de Polignac number, because 23315140357 - 2¹¹ = 23315138309 is a prime.

It is a super-2 number, since 2×23315140357² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23315140307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11657570178 + 11657570179.

It is an arithmetic number, because the mean of its divisors is an integer number (11657570179).

Almost surely, 2^23315140357 is an apocalyptic number.

It is an amenable number.

23315140357 is a deficient number, since it is larger than the sum of its proper divisors (1).

23315140357 is an equidigital number, since it uses as much as digits as its factorization.

23315140357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

Adding to 23315140357 its reverse (75304151332), we get a palindrome (98619291689).

The spelling of 23315140357 in words is "twenty-three billion, three hundred fifteen million, one hundred forty thousand, three hundred fifty-seven".