231313111033 has 4 divisors (see below), whose sum is σ = 233134474240. Its totient is φ = 229491747828.

The previous prime is 231313111027. The next prime is 231313111049. The reversal of 231313111033 is 330111313132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231313111033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231313110995 and 231313111013.

It is not an unprimeable number, because it can be changed into a prime (231313111093) 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, 910681413 + ... + 910681666.

It is an arithmetic number, because the mean of its divisors is an integer number (58283618560).

Almost surely, 2^231313111033 is an apocalyptic number.

It is an amenable number.

231313111033 is a deficient number, since it is larger than the sum of its proper divisors (1821363207).

231313111033 is a wasteful number, since it uses less digits than its factorization.

231313111033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821363206.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 231313111033 its reverse (330111313132), we get a palindrome (561424424165).

The spelling of 231313111033 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred eleven thousand, thirty-three".