231130071 has 8 divisors (see below), whose sum is σ = 342414960. Its totient is φ = 154086696.

The previous prime is 231130061. The next prime is 231130091. The reversal of 231130071 is 170031132.

It is not a de Polignac number, because 231130071 - 2¹⁹ = 230605783 is a prime.

It is a super-2 number, since 2×231130071² = 106842219440930082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4280160 + ... + 4280213.

It is an arithmetic number, because the mean of its divisors is an integer number (42801870).

Almost surely, 2^231130071 is an apocalyptic number.

231130071 is a deficient number, since it is larger than the sum of its proper divisors (111284889).

231130071 is an equidigital number, since it uses as much as digits as its factorization.

231130071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560382 (or 8560376 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 231130071 is about 15202.9625731303. The cubic root of 231130071 is about 613.6943866660.

The spelling of 231130071 in words is "two hundred thirty-one million, one hundred thirty thousand, seventy-one".