100311131309 has 4 divisors (see below), whose sum is σ = 103022243004. Its totient is φ = 97600019616.

The previous prime is 100311131303. The next prime is 100311131329. The reversal of 100311131309 is 903131113001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53310192100 + 47000939209 = 230890^2 + 216797^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100311131309 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 (100311131303) 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, 1355555792 + ... + 1355555865.

It is an arithmetic number, because the mean of its divisors is an integer number (25755560751).

Almost surely, 2^100311131309 is an apocalyptic number.

It is an amenable number.

100311131309 is a deficient number, since it is larger than the sum of its proper divisors (2711111695).

100311131309 is an equidigital number, since it uses as much as digits as its factorization.

100311131309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711111694.

The product of its (nonzero) digits is 243, while the sum is 23.

The spelling of 100311131309 in words is "one hundred billion, three hundred eleven million, one hundred thirty-one thousand, three hundred nine".