23331501493 has 2 divisors, whose sum is σ = 23331501494. Its totient is φ = 23331501492.

The previous prime is 23331501407. The next prime is 23331501499. The reversal of 23331501493 is 39410513332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23330424049 + 1077444 = 152743^2 + 1038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23331501493 is a prime.

It is a super-2 number, since 2×23331501493² (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 (23331501499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11665750746 + 11665750747.

It is an arithmetic number, because the mean of its divisors is an integer number (11665750747).

Almost surely, 2^23331501493 is an apocalyptic number.

It is an amenable number.

23331501493 is a deficient number, since it is larger than the sum of its proper divisors (1).

23331501493 is an equidigital number, since it uses as much as digits as its factorization.

23331501493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The spelling of 23331501493 in words is "twenty-three billion, three hundred thirty-one million, five hundred one thousand, four hundred ninety-three".