2131641101 has 4 divisors (see below), whose sum is σ = 2257031772. Its totient is φ = 2006250432.

The previous prime is 2131641097. The next prime is 2131641119. The reversal of 2131641101 is 1011461312.

It is a happy number.

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 1389351076 + 742290025 = 37274^2 + 27245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131641101 - 2² = 2131641097 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 (2131640101) 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, 62695310 + ... + 62695343.

It is an arithmetic number, because the mean of its divisors is an integer number (564257943).

Almost surely, 2^2131641101 is an apocalyptic number.

It is an amenable number.

2131641101 is a deficient number, since it is larger than the sum of its proper divisors (125390671).

2131641101 is a wasteful number, since it uses less digits than its factorization.

2131641101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125390670.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2131641101 is about 46169.6989485528. The cubic root of 2131641101 is about 1286.9787076933.

The spelling of 2131641101 in words is "two billion, one hundred thirty-one million, six hundred forty-one thousand, one hundred one".