2631091 has 2 divisors, whose sum is σ = 2631092. Its totient is φ = 2631090.

The previous prime is 2631077. The next prime is 2631103. The reversal of 2631091 is 1901362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2631091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2631071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315545 + 1315546.

It is an arithmetic number, because the mean of its divisors is an integer number (1315546).

2^2631091 is an apocalyptic number.

2631091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631091 is an equidigital number, since it uses as much as digits as its factorization.

2631091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2631091 is about 1622.0638088559. The cubic root of 2631091 is about 138.0528223187.

The spelling of 2631091 in words is "two million, six hundred thirty-one thousand, ninety-one".