33131023 has 2 divisors, whose sum is σ = 33131024. Its totient is φ = 33131022.

The previous prime is 33130997. The next prime is 33131069. The reversal of 33131023 is 32013133.

It is a weak prime.

It is an emirp because it is prime and its reverse (32013133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33131023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33130988 and 33131006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33131323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565511 + 16565512.

It is an arithmetic number, because the mean of its divisors is an integer number (16565512).

Almost surely, 2^33131023 is an apocalyptic number.

33131023 is a deficient number, since it is larger than the sum of its proper divisors (1).

33131023 is an equidigital number, since it uses as much as digits as its factorization.

33131023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 33131023 is about 5755.9554376315. The cubic root of 33131023 is about 321.1773782459.

Adding to 33131023 its reverse (32013133), we get a palindrome (65144156).

The spelling of 33131023 in words is "thirty-three million, one hundred thirty-one thousand, twenty-three".