2100321131 has 2 divisors, whose sum is σ = 2100321132. Its totient is φ = 2100321130.

The previous prime is 2100321127. The next prime is 2100321133. The reversal of 2100321131 is 1311230012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100321131 - 2² = 2100321127 is a prime.

It is a super-2 number, since 2×2100321131² = 8822697706650238322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2100321133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2100321133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050160565 + 1050160566.

It is an arithmetic number, because the mean of its divisors is an integer number (1050160566).

Almost surely, 2^2100321131 is an apocalyptic number.

2100321131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100321131 is an equidigital number, since it uses as much as digits as its factorization.

2100321131 is an evil number, because the sum of its binary digits is even.

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

The square root of 2100321131 is about 45829.2606420832. The cubic root of 2100321131 is about 1280.6444368459.

Adding to 2100321131 its reverse (1311230012), we get a palindrome (3411551143).

The spelling of 2100321131 in words is "two billion, one hundred million, three hundred twenty-one thousand, one hundred thirty-one".