231231353 has 2 divisors, whose sum is σ = 231231354. Its totient is φ = 231231352.

The previous prime is 231231347. The next prime is 231231367. The reversal of 231231353 is 353132132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130690624 + 100540729 = 11432^2 + 10027^2 .

It is a cyclic number.

It is not a de Polignac number, because 231231353 - 2⁴ = 231231337 is a prime.

It is a super-2 number, since 2×231231353² = 106935877220421218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231231323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115615676 + 115615677.

It is an arithmetic number, because the mean of its divisors is an integer number (115615677).

Almost surely, 2^231231353 is an apocalyptic number.

It is an amenable number.

231231353 is a deficient number, since it is larger than the sum of its proper divisors (1).

231231353 is an equidigital number, since it uses as much as digits as its factorization.

231231353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 23.

The square root of 231231353 is about 15206.2932038022. The cubic root of 231231353 is about 613.7840145796.

Adding to 231231353 its reverse (353132132), we get a palindrome (584363485).

The spelling of 231231353 in words is "two hundred thirty-one million, two hundred thirty-one thousand, three hundred fifty-three".