231380771 has 2 divisors, whose sum is σ = 231380772. Its totient is φ = 231380770.

The previous prime is 231380749. The next prime is 231380783. The reversal of 231380771 is 177083132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231380771 - 2²⁶ = 164271907 is a prime.

It is a super-2 number, since 2×231380771² = 107074122377108882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231380741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115690385 + 115690386.

It is an arithmetic number, because the mean of its divisors is an integer number (115690386).

Almost surely, 2^231380771 is an apocalyptic number.

231380771 is a deficient number, since it is larger than the sum of its proper divisors (1).

231380771 is an equidigital number, since it uses as much as digits as its factorization.

231380771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 231380771 is about 15211.2054420417. The cubic root of 231380771 is about 613.9161919161.

The spelling of 231380771 in words is "two hundred thirty-one million, three hundred eighty thousand, seven hundred seventy-one".