23031312149 has 2 divisors, whose sum is σ = 23031312150. Its totient is φ = 23031312148.

The previous prime is 23031312107. The next prime is 23031312151. The reversal of 23031312149 is 94121313032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19374691249 + 3656620900 = 139193^2 + 60470^2 .

It is a cyclic number.

It is not a de Polignac number, because 23031312149 - 2²⁰ = 23030263573 is a prime.

It is a super-3 number, since 3×23031312149³ (a number of 32 digits) contains 333 as substring.

Together with 23031312151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23031312169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515656074 + 11515656075.

It is an arithmetic number, because the mean of its divisors is an integer number (11515656075).

Almost surely, 2^23031312149 is an apocalyptic number.

It is an amenable number.

23031312149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031312149 is an equidigital number, since it uses as much as digits as its factorization.

23031312149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 23031312149 in words is "twenty-three billion, thirty-one million, three hundred twelve thousand, one hundred forty-nine".