2291032031 has 2 divisors, whose sum is σ = 2291032032. Its totient is φ = 2291032030.

The previous prime is 2291032019. The next prime is 2291032033. The reversal of 2291032031 is 1302301922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291032031 is a prime.

It is a super-2 number, since 2×2291032031² = 10497655534135969922, which contains 22 as substring.

Together with 2291032033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2291031988 and 2291032006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2291032033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145516015 + 1145516016.

It is an arithmetic number, because the mean of its divisors is an integer number (1145516016).

Almost surely, 2^2291032031 is an apocalyptic number.

2291032031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291032031 is an equidigital number, since it uses as much as digits as its factorization.

2291032031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2291032031 is about 47864.7263754845. The cubic root of 2291032031 is about 1318.2882677355.

Adding to 2291032031 its reverse (1302301922), we get a palindrome (3593333953).

The spelling of 2291032031 in words is "two billion, two hundred ninety-one million, thirty-two thousand, thirty-one".