2104123131 has 24 divisors (see below), whose sum is σ = 3339810864. Its totient is φ = 1265909760.

The previous prime is 2104123129. The next prime is 2104123169. The reversal of 2104123131 is 1313214012.

It is not a de Polignac number, because 2104123131 - 2¹ = 2104123129 is a prime.

It is a super-2 number, since 2×2104123131² = 8854668300818486322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2104123121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64006 + ... + 91131.

It is an arithmetic number, because the mean of its divisors is an integer number (139158786).

Almost surely, 2^2104123131 is an apocalyptic number.

2104123131 is a deficient number, since it is larger than the sum of its proper divisors (1235687733).

2104123131 is a wasteful number, since it uses less digits than its factorization.

2104123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155291 (or 155288 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2104123131 is about 45870.7219367648. The cubic root of 2104123131 is about 1281.4167116294.

Adding to 2104123131 its reverse (1313214012), we get a palindrome (3417337143).

The spelling of 2104123131 in words is "two billion, one hundred four million, one hundred twenty-three thousand, one hundred thirty-one".