349499431 has 2 divisors, whose sum is σ = 349499432. Its totient is φ = 349499430.

The previous prime is 349499401. The next prime is 349499443. The reversal of 349499431 is 134994943.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 349499431 - 2¹³ = 349491239 is a prime.

It is a super-2 number, since 2×349499431² = 244299704538647522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349499401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174749715 + 174749716.

It is an arithmetic number, because the mean of its divisors is an integer number (174749716).

Almost surely, 2^349499431 is an apocalyptic number.

349499431 is a deficient number, since it is larger than the sum of its proper divisors (1).

349499431 is an equidigital number, since it uses as much as digits as its factorization.

349499431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 349499431 is about 18694.9038777951. The cubic root of 349499431 is about 704.3937453621.

The spelling of 349499431 in words is "three hundred forty-nine million, four hundred ninety-nine thousand, four hundred thirty-one".