231132371 has 2 divisors, whose sum is σ = 231132372. Its totient is φ = 231132370.

The previous prime is 231132337. The next prime is 231132383. The reversal of 231132371 is 173231132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231132371 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (231132271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115566185 + 115566186.

It is an arithmetic number, because the mean of its divisors is an integer number (115566186).

Almost surely, 2^231132371 is an apocalyptic number.

231132371 is a deficient number, since it is larger than the sum of its proper divisors (1).

231132371 is an equidigital number, since it uses as much as digits as its factorization.

231132371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 231132371 is about 15203.0382160935. The cubic root of 231132371 is about 613.6964223054.

The spelling of 231132371 in words is "two hundred thirty-one million, one hundred thirty-two thousand, three hundred seventy-one".