2431132309 has 2 divisors, whose sum is σ = 2431132310. Its totient is φ = 2431132308.

The previous prime is 2431132307. The next prime is 2431132331. The reversal of 2431132309 is 9032311342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2177622225 + 253510084 = 46665^2 + 15922^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431132309 - 2¹ = 2431132307 is a prime.

Together with 2431132307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2431132307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215566154 + 1215566155.

It is an arithmetic number, because the mean of its divisors is an integer number (1215566155).

Almost surely, 2^2431132309 is an apocalyptic number.

It is an amenable number.

2431132309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431132309 is an equidigital number, since it uses as much as digits as its factorization.

2431132309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2431132309 is about 49306.5138597326. The cubic root of 2431132309 is about 1344.6302119082.

The spelling of 2431132309 in words is "two billion, four hundred thirty-one million, one hundred thirty-two thousand, three hundred nine".