31133012023 has 4 divisors (see below), whose sum is σ = 31158345240. Its totient is φ = 31107678808.

The previous prime is 31133012021. The next prime is 31133012063. The reversal of 31133012023 is 32021033113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31133012023 - 2¹ = 31133012021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12664765 + ... + 12667222.

It is an arithmetic number, because the mean of its divisors is an integer number (7789586310).

Almost surely, 2^31133012023 is an apocalyptic number.

31133012023 is a deficient number, since it is larger than the sum of its proper divisors (25333217).

31133012023 is a wasteful number, since it uses less digits than its factorization.

31133012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25333216.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31133012023 its reverse (32021033113), we get a palindrome (63154045136).

The spelling of 31133012023 in words is "thirty-one billion, one hundred thirty-three million, twelve thousand, twenty-three".