2291131 has 2 divisors, whose sum is σ = 2291132. Its totient is φ = 2291130.

The previous prime is 2291119. The next prime is 2291143. The reversal of 2291131 is 1311922.

It is a balanced prime because it is at equal distance from previous prime (2291119) and next prime (2291143).

It is a cyclic number.

It is not a de Polignac number, because 2291131 - 2⁹ = 2290619 is a prime.

It is a super-2 number, since 2×2291131² = 10498562518322, which contains 22 as substring.

2291131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2291099 and 2291108.

It is not a weakly prime, because it can be changed into another prime (2291231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145565 + 1145566.

It is an arithmetic number, because the mean of its divisors is an integer number (1145566).

2^2291131 is an apocalyptic number.

2291131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291131 is an equidigital number, since it uses as much as digits as its factorization.

2291131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 19.

The square root of 2291131 is about 1513.6482418316. The cubic root of 2291131 is about 131.8307250126.

The spelling of 2291131 in words is "two million, two hundred ninety-one thousand, one hundred thirty-one".