2291898031 has 2 divisors, whose sum is σ = 2291898032. Its totient is φ = 2291898030.

The previous prime is 2291898029. The next prime is 2291898041. The reversal of 2291898031 is 1308981922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2291898031 - 2¹ = 2291898029 is a prime.

It is a super-2 number, since 2×2291898031² = 10505593169003353922, which contains 22 as substring.

Together with 2291898029, 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 (2291898041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145949015 + 1145949016.

It is an arithmetic number, because the mean of its divisors is an integer number (1145949016).

Almost surely, 2^2291898031 is an apocalyptic number.

2291898031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291898031 is an equidigital number, since it uses as much as digits as its factorization.

2291898031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 2291898031 is about 47873.7718484767. The cubic root of 2291898031 is about 1318.4543491943.

The spelling of 2291898031 in words is "two billion, two hundred ninety-one million, eight hundred ninety-eight thousand, thirty-one".