349327831 has 4 divisors (see below), whose sum is σ = 357848064. Its totient is φ = 340807600.

The previous prime is 349327819. The next prime is 349327859. The reversal of 349327831 is 138723943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138723943 = 61 ⋅2274163.

It is a cyclic number.

It is not a de Polignac number, because 349327831 - 2⁵ = 349327799 is a prime.

It is a super-2 number, since 2×349327831² = 244059867022329122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349327031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260055 + ... + 4260136.

It is an arithmetic number, because the mean of its divisors is an integer number (89462016).

Almost surely, 2^349327831 is an apocalyptic number.

349327831 is a deficient number, since it is larger than the sum of its proper divisors (8520233).

349327831 is an equidigital number, since it uses as much as digits as its factorization.

349327831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520232.

The product of its digits is 108864, while the sum is 40.

The square root of 349327831 is about 18690.3138282908. The cubic root of 349327831 is about 704.2784435486.

The spelling of 349327831 in words is "three hundred forty-nine million, three hundred twenty-seven thousand, eight hundred thirty-one".