2312809933 has 4 divisors (see below), whose sum is σ = 2643211360. Its totient is φ = 1982408508.

The previous prime is 2312809921. The next prime is 2312809951. The reversal of 2312809933 is 3399082132.

It is a happy number.

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 2312809933 - 2²⁹ = 1775939021 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 (2312809973) 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, 165200703 + ... + 165200716.

It is an arithmetic number, because the mean of its divisors is an integer number (660802840).

Almost surely, 2^2312809933 is an apocalyptic number.

It is an amenable number.

2312809933 is a deficient number, since it is larger than the sum of its proper divisors (330401427).

2312809933 is an equidigital number, since it uses as much as digits as its factorization.

2312809933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330401426.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 2312809933 is about 48091.6825760963. The cubic root of 2312809933 is about 1322.4521934827.

The spelling of 2312809933 in words is "two billion, three hundred twelve million, eight hundred nine thousand, nine hundred thirty-three".