231400159 has 4 divisors (see below), whose sum is σ = 231435016. Its totient is φ = 231365304.

The previous prime is 231400153. The next prime is 231400177. The reversal of 231400159 is 951004132.

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 231400159 - 2⁹ = 231399647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231400153) 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, 4044 + ... + 21889.

It is an arithmetic number, because the mean of its divisors is an integer number (57858754).

Almost surely, 2^231400159 is an apocalyptic number.

231400159 is a deficient number, since it is larger than the sum of its proper divisors (34857).

231400159 is an equidigital number, since it uses as much as digits as its factorization.

231400159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34856.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 231400159 is about 15211.8427220373. The cubic root of 231400159 is about 613.9333386516.

The spelling of 231400159 in words is "two hundred thirty-one million, four hundred thousand, one hundred fifty-nine".