349231531 has 12 divisors (see below), whose sum is σ = 387402400. Its totient is φ = 314558640.

The previous prime is 349231529. The next prime is 349231559. The reversal of 349231531 is 135132943.

It is not a de Polignac number, because 349231531 - 2¹ = 349231529 is a prime.

It is a super-2 number, since 2×349231531² = 243925324489207922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 349231493 and 349231502.

It is not an unprimeable number, because it can be changed into a prime (349231501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51 + ... + 26428.

Almost surely, 2^349231531 is an apocalyptic number.

349231531 is a deficient number, since it is larger than the sum of its proper divisors (38170869).

349231531 is a wasteful number, since it uses less digits than its factorization.

349231531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26610 (or 26599 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 349231531 is about 18687.7374499965. The cubic root of 349231531 is about 704.2137209191.

The spelling of 349231531 in words is "three hundred forty-nine million, two hundred thirty-one thousand, five hundred thirty-one".