2100554131 has 4 divisors (see below), whose sum is σ = 2262135232. Its totient is φ = 1938973032.

The previous prime is 2100554089. The next prime is 2100554149. The reversal of 2100554131 is 1314550012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2100554131 - 2⁷ = 2100554003 is a prime.

It is a super-2 number, since 2×2100554131² = 8824655314522330322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100554531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80790531 + ... + 80790556.

It is an arithmetic number, because the mean of its divisors is an integer number (565533808).

Almost surely, 2^2100554131 is an apocalyptic number.

2100554131 is a deficient number, since it is larger than the sum of its proper divisors (161581101).

2100554131 is a wasteful number, since it uses less digits than its factorization.

2100554131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161581100.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2100554131 is about 45831.8026156511. The cubic root of 2100554131 is about 1280.6917913696.

The spelling of 2100554131 in words is "two billion, one hundred million, five hundred fifty-four thousand, one hundred thirty-one".