231340401 has 16 divisors (see below), whose sum is σ = 345875200. Its totient is φ = 152810064.

The previous prime is 231340397. The next prime is 231340429. The reversal of 231340401 is 104043132.

231340401 is a `hidden beast` number, since 231 + 34 + 0 + 401 = 666.

It is not a de Polignac number, because 231340401 - 2² = 231340397 is a prime.

It is a super-2 number, since 2×231340401² = 107036762269681602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231344401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36361 + ... + 42246.

It is an arithmetic number, because the mean of its divisors is an integer number (21617200).

Almost surely, 2^231340401 is an apocalyptic number.

It is an amenable number.

231340401 is a deficient number, since it is larger than the sum of its proper divisors (114534799).

231340401 is a wasteful number, since it uses less digits than its factorization.

231340401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78725 (or 78719 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231340401 is about 15209.8784018808. The cubic root of 231340401 is about 613.8804856384.

Adding to 231340401 its reverse (104043132), we get a palindrome (335383533).

The spelling of 231340401 in words is "two hundred thirty-one million, three hundred forty thousand, four hundred one".