349113681 has 36 divisors (see below), whose sum is σ = 588259152. Its totient is φ = 198931824.

The previous prime is 349113643. The next prime is 349113691. The reversal of 349113681 is 186311943.

It is not a de Polignac number, because 349113681 - 2¹⁷ = 348982609 is a prime.

It is a super-2 number, since 2×349113681² = 243760724522739522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (349113631) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 194470 + ... + 196256.

It is an arithmetic number, because the mean of its divisors is an integer number (16340532).

Almost surely, 2^349113681 is an apocalyptic number.

It is an amenable number.

349113681 is a deficient number, since it is larger than the sum of its proper divisors (239145471).

349113681 is a wasteful number, since it uses less digits than its factorization.

349113681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250 (or 2240 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 349113681 is about 18684.5840467483. The cubic root of 349113681 is about 704.1344984772.

The spelling of 349113681 in words is "three hundred forty-nine million, one hundred thirteen thousand, six hundred eighty-one".