2073121309 has 4 divisors (see below), whose sum is σ = 2369281504. Its totient is φ = 1776961116.

The previous prime is 2073121301. The next prime is 2073121319. The reversal of 2073121309 is 9031213702.

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 not a de Polignac number, because 2073121309 - 2³ = 2073121301 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 (2073121301) 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, 148080087 + ... + 148080100.

It is an arithmetic number, because the mean of its divisors is an integer number (592320376).

Almost surely, 2^2073121309 is an apocalyptic number.

It is an amenable number.

2073121309 is a deficient number, since it is larger than the sum of its proper divisors (296160195).

2073121309 is an equidigital number, since it uses as much as digits as its factorization.

2073121309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296160194.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2073121309 is about 45531.5419132715. The cubic root of 2073121309 is about 1275.0921494849.

The spelling of 2073121309 in words is "two billion, seventy-three million, one hundred twenty-one thousand, three hundred nine".