231912152149 has 2 divisors, whose sum is σ = 231912152150. Its totient is φ = 231912152148.

The previous prime is 231912152141. The next prime is 231912152233. The reversal of 231912152149 is 941251219132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209083964049 + 22828188100 = 457257^2 + 151090^2 .

It is a cyclic number.

It is not a de Polignac number, because 231912152149 - 2³ = 231912152141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231912152141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115956076074 + 115956076075.

It is an arithmetic number, because the mean of its divisors is an integer number (115956076075).

Almost surely, 2^231912152149 is an apocalyptic number.

It is an amenable number.

231912152149 is a deficient number, since it is larger than the sum of its proper divisors (1).

231912152149 is an equidigital number, since it uses as much as digits as its factorization.

231912152149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The spelling of 231912152149 in words is "two hundred thirty-one billion, nine hundred twelve million, one hundred fifty-two thousand, one hundred forty-nine".