2291213903 has 16 divisors (see below), whose sum is σ = 2561499936. Its totient is φ = 2031719040.

The previous prime is 2291213887. The next prime is 2291213909. The reversal of 2291213903 is 3093121922.

It is a cyclic number.

It is not a de Polignac number, because 2291213903 - 2⁴ = 2291213887 is a prime.

It is a super-2 number, since 2×2291213903² = 10499322298600986818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2291213903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291213909) 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 in 15 ways as a sum of consecutive naturals, for example, 89501 + ... + 112217.

It is an arithmetic number, because the mean of its divisors is an integer number (160093746).

Almost surely, 2^2291213903 is an apocalyptic number.

2291213903 is a deficient number, since it is larger than the sum of its proper divisors (270286033).

2291213903 is a wasteful number, since it uses less digits than its factorization.

2291213903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22954.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 2291213903 is about 47866.6261919513. The cubic root of 2291213903 is about 1318.3231506146.

The spelling of 2291213903 in words is "two billion, two hundred ninety-one million, two hundred thirteen thousand, nine hundred three".