23231012197 has 2 divisors, whose sum is σ = 23231012198. Its totient is φ = 23231012196.

The previous prime is 23231012177. The next prime is 23231012243. The reversal of 23231012197 is 79121013232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20980363716 + 2250648481 = 144846^2 + 47441^2 .

It is a cyclic number.

It is not a de Polignac number, because 23231012197 - 2³¹ = 21083528549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23231012177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615506098 + 11615506099.

It is an arithmetic number, because the mean of its divisors is an integer number (11615506099).

Almost surely, 2^23231012197 is an apocalyptic number.

It is an amenable number.

23231012197 is a deficient number, since it is larger than the sum of its proper divisors (1).

23231012197 is an equidigital number, since it uses as much as digits as its factorization.

23231012197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 23231012197 in words is "twenty-three billion, two hundred thirty-one million, twelve thousand, one hundred ninety-seven".