33133131023 has 4 divisors (see below), whose sum is σ = 33159660000. Its totient is φ = 33106602048.

The previous prime is 33133131001. The next prime is 33133131029. The reversal of 33133131023 is 32013133133.

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-33133131023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33133131023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33133131029) 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, 13262615 + ... + 13265112.

It is an arithmetic number, because the mean of its divisors is an integer number (8289915000).

Almost surely, 2^33133131023 is an apocalyptic number.

33133131023 is a deficient number, since it is larger than the sum of its proper divisors (26528977).

33133131023 is a wasteful number, since it uses less digits than its factorization.

33133131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26528976.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 33133131023 its reverse (32013133133), we get a palindrome (65146264156).

The spelling of 33133131023 in words is "thirty-three billion, one hundred thirty-three million, one hundred thirty-one thousand, twenty-three".