231135401 has 6 divisors (see below), whose sum is σ = 268871850. Its totient is φ = 198116016.

The previous prime is 231135367. The next prime is 231135419. The reversal of 231135401 is 104531132.

It can be written as a sum of positive squares in only one way, i.e., 214651801 + 16483600 = 14651^2 + 4060^2 .

It is not a de Polignac number, because 231135401 - 2¹⁰ = 231134377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231135431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2358476 + ... + 2358573.

It is an arithmetic number, because the mean of its divisors is an integer number (44811975).

Almost surely, 2^231135401 is an apocalyptic number.

It is an amenable number.

231135401 is a deficient number, since it is larger than the sum of its proper divisors (37736449).

231135401 is an equidigital number, since it uses as much as digits as its factorization.

231135401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717063 (or 4717056 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 231135401 is about 15203.1378669010. The cubic root of 231135401 is about 613.6991040184.

Adding to 231135401 its reverse (104531132), we get a palindrome (335666533).

The spelling of 231135401 in words is "two hundred thirty-one million, one hundred thirty-five thousand, four hundred one".