231356641 has 8 divisors (see below), whose sum is σ = 240752160. Its totient is φ = 222143712.

The previous prime is 231356633. The next prime is 231356669. The reversal of 231356641 is 146653132.

231356641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231356641 - 2³ = 231356633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231356341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43060 + ... + 48133.

It is an arithmetic number, because the mean of its divisors is an integer number (30094020).

Almost surely, 2^231356641 is an apocalyptic number.

It is an amenable number.

231356641 is a deficient number, since it is larger than the sum of its proper divisors (9395519).

231356641 is an equidigital number, since it uses as much as digits as its factorization.

231356641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91295.

The product of its digits is 12960, while the sum is 31.

The square root of 231356641 is about 15210.4122560830. The cubic root of 231356641 is about 613.8948500206.

The spelling of 231356641 in words is "two hundred thirty-one million, three hundred fifty-six thousand, six hundred forty-one".