2101504131 has 6 divisors (see below), whose sum is σ = 3035505980. Its totient is φ = 1401002748.

The previous prime is 2101504121. The next prime is 2101504151. The reversal of 2101504131 is 1314051012.

It is not a de Polignac number, because 2101504131 - 2⁷ = 2101504003 is a prime.

It is a super-2 number, since 2×2101504131² = 8832639225220130322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101504121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116750221 + ... + 116750238.

Almost surely, 2^2101504131 is an apocalyptic number.

2101504131 is a deficient number, since it is larger than the sum of its proper divisors (934001849).

2101504131 is a wasteful number, since it uses less digits than its factorization.

2101504131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233500465 (or 233500462 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2101504131 is about 45842.1654266026. The cubic root of 2101504131 is about 1280.8848315162.

Adding to 2101504131 its reverse (1314051012), we get a palindrome (3415555143).

The spelling of 2101504131 in words is "two billion, one hundred one million, five hundred four thousand, one hundred thirty-one".