231414921 has 8 divisors (see below), whose sum is σ = 342836960. Its totient is φ = 154276596.

The previous prime is 231414919. The next prime is 231414943. The reversal of 231414921 is 129414132.

It is a happy number.

231414921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231414921 - 2¹ = 231414919 is a prime.

It is a super-2 number, since 2×231414921² = 107105731322872482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8570923 = 231414921 / (2 + 3 + 1 + 4 + 1 + 4 + 9 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231414961) 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, 4285435 + ... + 4285488.

It is an arithmetic number, because the mean of its divisors is an integer number (42854620).

Almost surely, 2^231414921 is an apocalyptic number.

It is an amenable number.

231414921 is a deficient number, since it is larger than the sum of its proper divisors (111422039).

231414921 is an equidigital number, since it uses as much as digits as its factorization.

231414921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570932 (or 8570926 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 231414921 is about 15212.3279283613. The cubic root of 231414921 is about 613.9463935134.

The spelling of 231414921 in words is "two hundred thirty-one million, four hundred fourteen thousand, nine hundred twenty-one".