23154131197 has 2 divisors, whose sum is σ = 23154131198. Its totient is φ = 23154131196.

The previous prime is 23154131191. The next prime is 23154131207. The reversal of 23154131197 is 79113145132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22671626041 + 482505156 = 150571^2 + 21966^2 .

It is a cyclic number.

It is not a de Polignac number, because 23154131197 - 2⁷ = 23154131069 is a prime.

It is a super-2 number, since 2×23154131197² (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 (23154131191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11577065598 + 11577065599.

It is an arithmetic number, because the mean of its divisors is an integer number (11577065599).

Almost surely, 2^23154131197 is an apocalyptic number.

It is an amenable number.

23154131197 is a deficient number, since it is larger than the sum of its proper divisors (1).

23154131197 is an equidigital number, since it uses as much as digits as its factorization.

23154131197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The spelling of 23154131197 in words is "twenty-three billion, one hundred fifty-four million, one hundred thirty-one thousand, one hundred ninety-seven".