31020133101 has 4 divisors (see below), whose sum is σ = 41360177472. Its totient is φ = 20680088732.

The previous prime is 31020133033. The next prime is 31020133129. The reversal of 31020133101 is 10133102013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10133102013 = 3 ⋅3377700671.

It is a cyclic number.

It is not a de Polignac number, because 31020133101 - 2⁹ = 31020132589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020133181) 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, 5170022181 + ... + 5170022186.

It is an arithmetic number, because the mean of its divisors is an integer number (10340044368).

Almost surely, 2^31020133101 is an apocalyptic number.

It is an amenable number.

31020133101 is a deficient number, since it is larger than the sum of its proper divisors (10340044371).

31020133101 is a wasteful number, since it uses less digits than its factorization.

31020133101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340044370.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31020133101 its reverse (10133102013), we get a palindrome (41153235114).

The spelling of 31020133101 in words is "thirty-one billion, twenty million, one hundred thirty-three thousand, one hundred one".