2131120019 has 4 divisors (see below), whose sum is σ = 2435565744. Its totient is φ = 1826674296.

The previous prime is 2131120001. The next prime is 2131120021. The reversal of 2131120019 is 9100211312.

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 2131120019 - 2²⁸ = 1862684563 is a prime.

It is a super-2 number, since 2×2131120019² = 9083345070765120722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131123019) 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, 152222852 + ... + 152222865.

It is an arithmetic number, because the mean of its divisors is an integer number (608891436).

Almost surely, 2^2131120019 is an apocalyptic number.

2131120019 is a deficient number, since it is larger than the sum of its proper divisors (304445725).

2131120019 is an equidigital number, since it uses as much as digits as its factorization.

2131120019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304445724.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 2131120019 is about 46164.0554869262. The cubic root of 2131120019 is about 1286.8738313626.

The spelling of 2131120019 in words is "two billion, one hundred thirty-one million, one hundred twenty thousand, nineteen".