231433401 has 8 divisors (see below), whose sum is σ = 308943040. Its totient is φ = 154106352.

The previous prime is 231433399. The next prime is 231433421. The reversal of 231433401 is 104334132.

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

It is not a de Polignac number, because 231433401 - 2¹ = 231433399 is a prime.

It is a super-2 number, since 2×231433401² = 107122838196853602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231433421) 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, 42661 + ... + 47778.

It is an arithmetic number, because the mean of its divisors is an integer number (38617880).

Almost surely, 2^231433401 is an apocalyptic number.

It is an amenable number.

231433401 is a deficient number, since it is larger than the sum of its proper divisors (77509639).

231433401 is an equidigital number, since it uses as much as digits as its factorization.

231433401 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 (nonzero) digits is 864, while the sum is 21.

The square root of 231433401 is about 15212.9353183401. The cubic root of 231433401 is about 613.9627356278.

Adding to 231433401 its reverse (104334132), we get a palindrome (335767533).

The spelling of 231433401 in words is "two hundred thirty-one million, four hundred thirty-three thousand, four hundred one".