20310131133 has 16 divisors (see below), whose sum is σ = 30788831040. Its totient is φ = 13225200912.

The previous prime is 20310131119. The next prime is 20310131137. The reversal of 20310131133 is 33113101302.

It is a happy number.

It is not a de Polignac number, because 20310131133 - 2²¹ = 20308033981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310131137) 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, 8745666 + ... + 8747987.

It is an arithmetic number, because the mean of its divisors is an integer number (1924301940).

Almost surely, 2^20310131133 is an apocalyptic number.

It is an amenable number.

20310131133 is a deficient number, since it is larger than the sum of its proper divisors (10478699907).

20310131133 is a wasteful number, since it uses less digits than its factorization.

20310131133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17493705 (or 17493699 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20310131133 its reverse (33113101302), we get a palindrome (53423232435).

The spelling of 20310131133 in words is "twenty billion, three hundred ten million, one hundred thirty-one thousand, one hundred thirty-three".