349431 has 8 divisors (see below), whose sum is σ = 468720. Its totient is φ = 231552.

The previous prime is 349423. The next prime is 349471. The reversal of 349431 is 134943.

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

It is not a de Polignac number, because 349431 - 2³ = 349423 is a prime.

It is a super-2 number, since 2×349431² = 244204047522, which contains 22 as substring.

349431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349411) 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, 591 + ... + 1023.

It is an arithmetic number, because the mean of its divisors is an integer number (58590).

2³⁴⁹⁴³¹ is an apocalyptic number.

349431 is a deficient number, since it is larger than the sum of its proper divisors (119289).

349431 is a wasteful number, since it uses less digits than its factorization.

349431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705.

The product of its digits is 1296, while the sum is 24.

The square root of 349431 is about 591.1268899314. The cubic root of 349431 is about 70.4347769594.

It can be divided in two parts, 349 and 431, that added together give a triangular number (780 = T₃₉).

The spelling of 349431 in words is "three hundred forty-nine thousand, four hundred thirty-one".