20310131199 has 4 divisors (see below), whose sum is σ = 27080174936. Its totient is φ = 13540087464.

The previous prime is 20310131161. The next prime is 20310131227. The reversal of 20310131199 is 99113101302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-20310131199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310131119) 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, 3385021864 + ... + 3385021869.

It is an arithmetic number, because the mean of its divisors is an integer number (6770043734).

Almost surely, 2^20310131199 is an apocalyptic number.

20310131199 is a deficient number, since it is larger than the sum of its proper divisors (6770043737).

20310131199 is an equidigital number, since it uses as much as digits as its factorization.

20310131199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770043736.

The product of its (nonzero) digits is 1458, while the sum is 30.

The spelling of 20310131199 in words is "twenty billion, three hundred ten million, one hundred thirty-one thousand, one hundred ninety-nine".