31020233133 has 16 divisors (see below), whose sum is σ = 41619392640. Its totient is φ = 20550683136.

The previous prime is 31020233107. The next prime is 31020233143. The reversal of 31020233133 is 33133202013.

It is not a de Polignac number, because 31020233133 - 2¹⁰ = 31020232109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020233143) 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, 2647953 + ... + 2659641.

It is an arithmetic number, because the mean of its divisors is an integer number (2601212040).

Almost surely, 2^31020233133 is an apocalyptic number.

It is an amenable number.

31020233133 is a deficient number, since it is larger than the sum of its proper divisors (10599159507).

31020233133 is a wasteful number, since it uses less digits than its factorization.

31020233133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17156.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31020233133 its reverse (33133202013), we get a palindrome (64153435146).

The spelling of 31020233133 in words is "thirty-one billion, twenty million, two hundred thirty-three thousand, one hundred thirty-three".