231311553353 has 4 divisors (see below), whose sum is σ = 231894202500. Its totient is φ = 230728904208.

The previous prime is 231311553349. The next prime is 231311553359. The reversal of 231311553353 is 353355113132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 200424545344 + 30887008009 = 447688^2 + 175747^2 .

It is a cyclic number.

It is not a de Polignac number, because 231311553353 - 2² = 231311553349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231311553359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291323978 + ... + 291324771.

It is an arithmetic number, because the mean of its divisors is an integer number (57973550625).

Almost surely, 2^231311553353 is an apocalyptic number.

It is an amenable number.

231311553353 is a deficient number, since it is larger than the sum of its proper divisors (582649147).

231311553353 is an equidigital number, since it uses as much as digits as its factorization.

231311553353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582649146.

The product of its digits is 60750, while the sum is 35.

Adding to 231311553353 its reverse (353355113132), we get a palindrome (584666666485).

The spelling of 231311553353 in words is "two hundred thirty-one billion, three hundred eleven million, five hundred fifty-three thousand, three hundred fifty-three".