2131000309 has 8 divisors (see below), whose sum is σ = 2285483040. Its totient is φ = 1980750096.

The previous prime is 2131000307. The next prime is 2131000331. The reversal of 2131000309 is 9030001312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131000309 - 2¹ = 2131000307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131000307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057087 + ... + 1059100.

It is an arithmetic number, because the mean of its divisors is an integer number (285685380).

Almost surely, 2^2131000309 is an apocalyptic number.

It is an amenable number.

2131000309 is a deficient number, since it is larger than the sum of its proper divisors (154482731).

2131000309 is a wasteful number, since it uses less digits than its factorization.

2131000309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116259.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 2131000309 is about 46162.7588971890. The cubic root of 2131000309 is about 1286.8497353396.

The spelling of 2131000309 in words is "two billion, one hundred thirty-one million, three hundred nine", and thus it is an aban number.