349280531 has 8 divisors (see below), whose sum is σ = 355492800. Its totient is φ = 343078120.

The previous prime is 349280509. The next prime is 349280549. The reversal of 349280531 is 135082943.

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

It is a cyclic number.

It is not a de Polignac number, because 349280531 - 2¹⁴ = 349264147 is a prime.

It is a super-2 number, since 2×349280531² = 243993778671283922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349280491 and 349280500.

It is not an unprimeable number, because it can be changed into a prime (349280551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136736 + ... + 139266.

It is an arithmetic number, because the mean of its divisors is an integer number (44436600).

Almost surely, 2^349280531 is an apocalyptic number.

349280531 is a deficient number, since it is larger than the sum of its proper divisors (6212269).

349280531 is a wasteful number, since it uses less digits than its factorization.

349280531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 349280531 is about 18689.0484241440. The cubic root of 349280531 is about 704.2466550002.

The spelling of 349280531 in words is "three hundred forty-nine million, two hundred eighty thousand, five hundred thirty-one".