231849427 has 4 divisors (see below), whose sum is σ = 231890896. Its totient is φ = 231807960.

The previous prime is 231849389. The next prime is 231849479. The reversal of 231849427 is 724948132.

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

It is a cyclic number.

It is not a de Polignac number, because 231849427 - 2¹⁹ = 231325139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231849427.

It is not an unprimeable number, because it can be changed into a prime (231849487) 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, 10743 + ... + 24064.

It is an arithmetic number, because the mean of its divisors is an integer number (57972724).

Almost surely, 2^231849427 is an apocalyptic number.

231849427 is a deficient number, since it is larger than the sum of its proper divisors (41469).

231849427 is an equidigital number, since it uses as much as digits as its factorization.

231849427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41468.

The product of its digits is 96768, while the sum is 40.

The square root of 231849427 is about 15226.6026085926. The cubic root of 231849427 is about 614.3304030457.

The spelling of 231849427 in words is "two hundred thirty-one million, eight hundred forty-nine thousand, four hundred twenty-seven".