2131044989 has 4 divisors (see below), whose sum is σ = 2147312640. Its totient is φ = 2114777340.

The previous prime is 2131044983. The next prime is 2131045009. The reversal of 2131044989 is 9894401312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131044989 - 2⁴ = 2131044973 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 (2131044983) 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, 8133629 + ... + 8133890.

It is an arithmetic number, because the mean of its divisors is an integer number (536828160).

Almost surely, 2^2131044989 is an apocalyptic number.

It is an amenable number.

2131044989 is a deficient number, since it is larger than the sum of its proper divisors (16267651).

2131044989 is a wasteful number, since it uses less digits than its factorization.

2131044989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16267650.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 2131044989 is about 46163.2428345323. The cubic root of 2131044989 is about 1286.8587289320.

The spelling of 2131044989 in words is "two billion, one hundred thirty-one million, forty-four thousand, nine hundred eighty-nine".