23131232133 has 16 divisors (see below), whose sum is σ = 31565968896. Its totient is φ = 15058819440.

The previous prime is 23131232129. The next prime is 23131232161. The reversal of 23131232133 is 33123213132.

It is not a de Polignac number, because 23131232133 - 2² = 23131232129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131232123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641248 + ... + 676358.

It is an arithmetic number, because the mean of its divisors is an integer number (1972873056).

Almost surely, 2^23131232133 is an apocalyptic number.

It is an amenable number.

23131232133 is a deficient number, since it is larger than the sum of its proper divisors (8434736763).

23131232133 is a wasteful number, since it uses less digits than its factorization.

23131232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40264.

The product of its digits is 1944, while the sum is 24.

Adding to 23131232133 its reverse (33123213132), we get a palindrome (56254445265).

The spelling of 23131232133 in words is "twenty-three billion, one hundred thirty-one million, two hundred thirty-two thousand, one hundred thirty-three".