231340051 has 4 divisors (see below), whose sum is σ = 231811704. Its totient is φ = 230868400.

The previous prime is 231340033. The next prime is 231340069. The reversal of 231340051 is 150043132.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (231340033) and next prime (231340069).

It is a cyclic number.

It is not a de Polignac number, because 231340051 - 2¹⁵ = 231307283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231340091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235090 + ... + 236071.

It is an arithmetic number, because the mean of its divisors is an integer number (57952926).

Almost surely, 2^231340051 is an apocalyptic number.

231340051 is a deficient number, since it is larger than the sum of its proper divisors (471653).

231340051 is an equidigital number, since it uses as much as digits as its factorization.

231340051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471652.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 231340051 is about 15209.8668961960. The cubic root of 231340051 is about 613.8801760538.

Adding to 231340051 its reverse (150043132), we get a palindrome (381383183).

The spelling of 231340051 in words is "two hundred thirty-one million, three hundred forty thousand, fifty-one".