349191231 has 16 divisors (see below), whose sum is σ = 469353600. Its totient is φ = 230918688.

The previous prime is 349191229. The next prime is 349191259. The reversal of 349191231 is 132191943.

It is a happy number.

It is not a de Polignac number, because 349191231 - 2¹ = 349191229 is a prime.

It is a super-2 number, since 2×349191231² = 243869031614590722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 349191192 and 349191201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349191211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406080 + ... + 406938.

It is an arithmetic number, because the mean of its divisors is an integer number (29334600).

Almost surely, 2^349191231 is an apocalyptic number.

349191231 is a deficient number, since it is larger than the sum of its proper divisors (120162369).

349191231 is a wasteful number, since it uses less digits than its factorization.

349191231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798.

The product of its digits is 5832, while the sum is 33.

The square root of 349191231 is about 18686.6591717193. The cubic root of 349191231 is about 704.1866320090.

It can be divided in two parts, 3491912 and 31, that added together give a palindrome (3491943).

The spelling of 349191231 in words is "three hundred forty-nine million, one hundred ninety-one thousand, two hundred thirty-one".