20231022131 has 4 divisors (see below), whose sum is σ = 20236020264. Its totient is φ = 20226024000.

The previous prime is 20231022121. The next prime is 20231022151. The reversal of 20231022131 is 13122013202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13122013202 = 2 ⋅6561006601.

It is a cyclic number.

It is not a de Polignac number, because 20231022131 - 2³⁴ = 3051152947 is a prime.

It is a super-2 number, since 2×20231022131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231022121) 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, 2492990 + ... + 2501091.

It is an arithmetic number, because the mean of its divisors is an integer number (5059005066).

Almost surely, 2^20231022131 is an apocalyptic number.

20231022131 is a deficient number, since it is larger than the sum of its proper divisors (4998133).

20231022131 is an equidigital number, since it uses as much as digits as its factorization.

20231022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998132.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20231022131 its reverse (13122013202), we get a palindrome (33353035333).

The spelling of 20231022131 in words is "twenty billion, two hundred thirty-one million, twenty-two thousand, one hundred thirty-one".