2111302409 has 2 divisors, whose sum is σ = 2111302410. Its totient is φ = 2111302408.

The previous prime is 2111302393. The next prime is 2111302429. The reversal of 2111302409 is 9042031112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1459010809 + 652291600 = 38197^2 + 25540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111302409 - 2⁴ = 2111302393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111302429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055651204 + 1055651205.

It is an arithmetic number, because the mean of its divisors is an integer number (1055651205).

Almost surely, 2^2111302409 is an apocalyptic number.

It is an amenable number.

2111302409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111302409 is an equidigital number, since it uses as much as digits as its factorization.

2111302409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2111302409 is about 45948.9108576036. The cubic root of 2111302409 is about 1282.8724571575.

The spelling of 2111302409 in words is "two billion, one hundred eleven million, three hundred two thousand, four hundred nine".