349688931 has 8 divisors (see below), whose sum is σ = 482329680. Its totient is φ = 225087072.

The previous prime is 349688917. The next prime is 349688951. The reversal of 349688931 is 139886943.

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

It is not a de Polignac number, because 349688931 - 2¹⁰ = 349687907 is a prime.

It is a super-2 number, since 2×349688931² = 244564696927845522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (349688951) 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, 2009620 + ... + 2009793.

It is an arithmetic number, because the mean of its divisors is an integer number (60291210).

Almost surely, 2^349688931 is an apocalyptic number.

349688931 is a deficient number, since it is larger than the sum of its proper divisors (132640749).

349688931 is a wasteful number, since it uses less digits than its factorization.

349688931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019445.

The product of its digits is 1119744, while the sum is 51.

The square root of 349688931 is about 18699.9714170905. The cubic root of 349688931 is about 704.5210307358.

The spelling of 349688931 in words is "three hundred forty-nine million, six hundred eighty-eight thousand, nine hundred thirty-one".