349390131 has 8 divisors (see below), whose sum is σ = 466262160. Its totient is φ = 232722432.

The previous prime is 349390123. The next prime is 349390157. The reversal of 349390131 is 131093943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 349390131 - 2³ = 349390123 is a prime.

It is a super-2 number, since 2×349390131² = 244146927280394322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 349390092 and 349390101.

It is not an unprimeable number, because it can be changed into a prime (349390831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47046 + ... + 53963.

It is an arithmetic number, because the mean of its divisors is an integer number (58282770).

Almost surely, 2^349390131 is an apocalyptic number.

349390131 is a deficient number, since it is larger than the sum of its proper divisors (116872029).

349390131 is a wasteful number, since it uses less digits than its factorization.

349390131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102165.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 349390131 is about 18691.9803926711. The cubic root of 349390131 is about 704.3203086536.

The spelling of 349390131 in words is "three hundred forty-nine million, three hundred ninety thousand, one hundred thirty-one".