23315311501 has 2 divisors, whose sum is σ = 23315311502. Its totient is φ = 23315311500.

The previous prime is 23315311463. The next prime is 23315311507. The reversal of 23315311501 is 10511351332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21411298276 + 1904013225 = 146326^2 + 43635^2 .

It is a cyclic number.

It is not a de Polignac number, because 23315311501 - 2⁷ = 23315311373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23315311507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11657655750 + 11657655751.

It is an arithmetic number, because the mean of its divisors is an integer number (11657655751).

Almost surely, 2^23315311501 is an apocalyptic number.

It is an amenable number.

23315311501 is a deficient number, since it is larger than the sum of its proper divisors (1).

23315311501 is an equidigital number, since it uses as much as digits as its factorization.

23315311501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 23315311501 its reverse (10511351332), we get a palindrome (33826662833).

The spelling of 23315311501 in words is "twenty-three billion, three hundred fifteen million, three hundred eleven thousand, five hundred one".