231311133299 has 4 divisors (see below), whose sum is σ = 231458748864. Its totient is φ = 231163517736.

The previous prime is 231311133281. The next prime is 231311133329. The reversal of 231311133299 is 992331113132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231311133299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231311133269) 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, 73805432 + ... + 73808565.

It is an arithmetic number, because the mean of its divisors is an integer number (57864687216).

Almost surely, 2^231311133299 is an apocalyptic number.

231311133299 is a deficient number, since it is larger than the sum of its proper divisors (147615565).

231311133299 is a wasteful number, since it uses less digits than its factorization.

231311133299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147615564.

The product of its digits is 26244, while the sum is 38.

The spelling of 231311133299 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred thirty-three thousand, two hundred ninety-nine".