231403801 has 2 divisors, whose sum is σ = 231403802. Its totient is φ = 231403800.

The previous prime is 231403787. The next prime is 231403807. The reversal of 231403801 is 108304132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144000000 + 87403801 = 12000^2 + 9349^2 .

It is a cyclic number.

It is not a de Polignac number, because 231403801 - 2²⁵ = 197849369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231403807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115701900 + 115701901.

It is an arithmetic number, because the mean of its divisors is an integer number (115701901).

Almost surely, 2^231403801 is an apocalyptic number.

It is an amenable number.

231403801 is a deficient number, since it is larger than the sum of its proper divisors (1).

231403801 is an equidigital number, since it uses as much as digits as its factorization.

231403801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 231403801 is about 15211.9624309292. The cubic root of 231403801 is about 613.9365595274.

Adding to 231403801 its reverse (108304132), we get a palindrome (339707933).

The spelling of 231403801 in words is "two hundred thirty-one million, four hundred three thousand, eight hundred one".