231115340313 has 64 divisors (see below), whose sum is σ = 413123961600. Its totient is φ = 125800750080.

The previous prime is 231115340303. The next prime is 231115340333. The reversal of 231115340313 is 313043511132.

231115340313 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 1 + 5 + 340 + 313 = 666.

It is not a de Polignac number, because 231115340313 - 2²⁴ = 231098563097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (231115340303) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 666048 + ... + 951761.

It is an arithmetic number, because the mean of its divisors is an integer number (6455061900).

Almost surely, 2^231115340313 is an apocalyptic number.

It is an amenable number.

231115340313 is a deficient number, since it is larger than the sum of its proper divisors (182008621287).

231115340313 is a wasteful number, since it uses less digits than its factorization.

231115340313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617879 (or 1617873 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 231115340313 its reverse (313043511132), we get a palindrome (544158851445).

The spelling of 231115340313 in words is "two hundred thirty-one billion, one hundred fifteen million, three hundred forty thousand, three hundred thirteen".