23120513149 has 2 divisors, whose sum is σ = 23120513150. Its totient is φ = 23120513148.

The previous prime is 23120513089. The next prime is 23120513159. The reversal of 23120513149 is 94131502132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13154484249 + 9966028900 = 114693^2 + 99830^2 .

It is a cyclic number.

It is not a de Polignac number, because 23120513149 - 2²¹ = 23118415997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23120513149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23120513159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560256574 + 11560256575.

It is an arithmetic number, because the mean of its divisors is an integer number (11560256575).

Almost surely, 2^23120513149 is an apocalyptic number.

It is an amenable number.

23120513149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120513149 is an equidigital number, since it uses as much as digits as its factorization.

23120513149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 23120513149 in words is "twenty-three billion, one hundred twenty million, five hundred thirteen thousand, one hundred forty-nine".