12020310131 has 4 divisors (see below), whose sum is σ = 12144230952. Its totient is φ = 11896389312.

The previous prime is 12020310091. The next prime is 12020310149. The reversal of 12020310131 is 13101302021.

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 12020310131 - 2⁶ = 12020310067 is a prime.

It is a super-2 number, since 2×12020310131² (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 (12020310161) 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, 61960265 + ... + 61960458.

It is an arithmetic number, because the mean of its divisors is an integer number (3036057738).

Almost surely, 2^12020310131 is an apocalyptic number.

12020310131 is a deficient number, since it is larger than the sum of its proper divisors (123920821).

12020310131 is an equidigital number, since it uses as much as digits as its factorization.

12020310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123920820.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12020310131 its reverse (13101302021), we get a palindrome (25121612152).

The spelling of 12020310131 in words is "twelve billion, twenty million, three hundred ten thousand, one hundred thirty-one".