346431138 has 32 divisors (see below), whose sum is σ = 725913600. Its totient is φ = 110080080.

The previous prime is 346431133. The next prime is 346431191. The reversal of 346431138 is 831134643.

It is a junction number, because it is equal to n+sod(n) for n = 346431099 and 346431108.

It is not an unprimeable number, because it can be changed into a prime (346431133) 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 15 ways as a sum of consecutive naturals, for example, 1438 + ... + 26361.

It is an arithmetic number, because the mean of its divisors is an integer number (22684800).

Almost surely, 2^346431138 is an apocalyptic number.

346431138 is an abundant number, since it is smaller than the sum of its proper divisors (379482462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

346431138 is a wasteful number, since it uses less digits than its factorization.

346431138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27902.

The product of its digits is 20736, while the sum is 33.

The square root of 346431138 is about 18612.6606910458. The cubic root of 346431138 is about 702.3263675099.

The spelling of 346431138 in words is "three hundred forty-six million, four hundred thirty-one thousand, one hundred thirty-eight".