349098731 has 2 divisors, whose sum is σ = 349098732. Its totient is φ = 349098730.

The previous prime is 349098713. The next prime is 349098779. The reversal of 349098731 is 137890943.

It is a happy number.

Together with previous prime (349098713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (137890943) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349098731 is a prime.

It is a super-2 number, since 2×349098731² = 243739847971620722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349098031) 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, 174549365 + 174549366.

It is an arithmetic number, because the mean of its divisors is an integer number (174549366).

Almost surely, 2^349098731 is an apocalyptic number.

349098731 is a deficient number, since it is larger than the sum of its proper divisors (1).

349098731 is an equidigital number, since it uses as much as digits as its factorization.

349098731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 349098731 is about 18684.1839800404. The cubic root of 349098731 is about 704.1244473472.

The spelling of 349098731 in words is "three hundred forty-nine million, ninety-eight thousand, seven hundred thirty-one".