740231491 has 2 divisors, whose sum is σ = 740231492. Its totient is φ = 740231490.

The previous prime is 740231449. The next prime is 740231533. The reversal of 740231491 is 194132047.

It is a balanced prime because it is at equal distance from previous prime (740231449) and next prime (740231533).

It is an emirp because it is prime and its reverse (194132047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 740231491 - 2⁷ = 740231363 is a prime.

It is not a weakly prime, because it can be changed into another prime (740231441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370115745 + 370115746.

It is an arithmetic number, because the mean of its divisors is an integer number (370115746).

Almost surely, 2^740231491 is an apocalyptic number.

740231491 is a deficient number, since it is larger than the sum of its proper divisors (1).

740231491 is an equidigital number, since it uses as much as digits as its factorization.

740231491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 740231491 is about 27207.1955739654. The cubic root of 740231491 is about 904.5984771938.

The spelling of 740231491 in words is "seven hundred forty million, two hundred thirty-one thousand, four hundred ninety-one".