2391281283 has 4 divisors (see below), whose sum is σ = 3188375048. Its totient is φ = 1594187520.

The previous prime is 2391281237. The next prime is 2391281297. The reversal of 2391281283 is 3821821932.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2391281283 - 2⁶ = 2391281219 is a prime.

It is a super-2 number, since 2×2391281283² = 11436452348852252178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2391281203) 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, 398546878 + ... + 398546883.

It is an arithmetic number, because the mean of its divisors is an integer number (797093762).

Almost surely, 2^2391281283 is an apocalyptic number.

2391281283 is a deficient number, since it is larger than the sum of its proper divisors (797093765).

2391281283 is an equidigital number, since it uses as much as digits as its factorization.

2391281283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797093764.

The product of its digits is 41472, while the sum is 39.

The square root of 2391281283 is about 48900.7288595988. The cubic root of 2391281283 is about 1337.2426561455.

The spelling of 2391281283 in words is "two billion, three hundred ninety-one million, two hundred eighty-one thousand, two hundred eighty-three".