2391281203 has 2 divisors, whose sum is σ = 2391281204. Its totient is φ = 2391281202.

The previous prime is 2391281201. The next prime is 2391281209. The reversal of 2391281203 is 3021821932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2391281203 - 2¹ = 2391281201 is a prime.

It is a super-2 number, since 2×2391281203² = 11436451583642254418, which contains 22 as substring.

Together with 2391281201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2391281201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195640601 + 1195640602.

It is an arithmetic number, because the mean of its divisors is an integer number (1195640602).

Almost surely, 2^2391281203 is an apocalyptic number.

2391281203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391281203 is an equidigital number, since it uses as much as digits as its factorization.

2391281203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2391281203 is about 48900.7280416151. The cubic root of 2391281203 is about 1337.2426412331.

The spelling of 2391281203 in words is "two billion, three hundred ninety-one million, two hundred eighty-one thousand, two hundred three".