231051071 has 2 divisors, whose sum is σ = 231051072. Its totient is φ = 231051070.

The previous prime is 231051049. The next prime is 231051133. The reversal of 231051071 is 170150132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231051071 - 2¹⁸ = 230788927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231051971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115525535 + 115525536.

It is an arithmetic number, because the mean of its divisors is an integer number (115525536).

Almost surely, 2^231051071 is an apocalyptic number.

231051071 is a deficient number, since it is larger than the sum of its proper divisors (1).

231051071 is an equidigital number, since it uses as much as digits as its factorization.

231051071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 231051071 is about 15200.3641732690. The cubic root of 231051071 is about 613.6244586798.

The spelling of 231051071 in words is "two hundred thirty-one million, fifty-one thousand, seventy-one".