23231131133 has 12 divisors (see below), whose sum is σ = 27754348572. Its totient is φ = 19374223680.

The previous prime is 23231131097. The next prime is 23231131177. The reversal of 23231131133 is 33113113232.

It can be written as a sum of positive squares in 2 ways, for example, as 10821616729 + 12409514404 = 104027^2 + 111398^2 .

It is not a de Polignac number, because 23231131133 - 2¹² = 23231127037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23231131099 and 23231131108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231134133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6405008 + ... + 6408633.

It is an arithmetic number, because the mean of its divisors is an integer number (2312862381).

Almost surely, 2^23231131133 is an apocalyptic number.

It is an amenable number.

23231131133 is a deficient number, since it is larger than the sum of its proper divisors (4523217439).

23231131133 is a wasteful number, since it uses less digits than its factorization.

23231131133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12813692 (or 12813685 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

Adding to 23231131133 its reverse (33113113232), we get a palindrome (56344244365).

The spelling of 23231131133 in words is "twenty-three billion, two hundred thirty-one million, one hundred thirty-one thousand, one hundred thirty-three".