731106091 has 2 divisors, whose sum is σ = 731106092. Its totient is φ = 731106090.

The previous prime is 731106049. The next prime is 731106109. The reversal of 731106091 is 190601137.

Together with next prime (731106109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 731106091 - 2²¹ = 729008939 is a prime.

It is a super-2 number, since 2×731106091² = 1069032232594600562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (731106031) 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, 365553045 + 365553046.

It is an arithmetic number, because the mean of its divisors is an integer number (365553046).

Almost surely, 2^731106091 is an apocalyptic number.

731106091 is a deficient number, since it is larger than the sum of its proper divisors (1).

731106091 is an equidigital number, since it uses as much as digits as its factorization.

731106091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 731106091 is about 27038.9735567014. The cubic root of 731106091 is about 900.8658708122.

The spelling of 731106091 in words is "seven hundred thirty-one million, one hundred six thousand, ninety-one".