345406231 has 4 divisors (see below), whose sum is σ = 345863272. Its totient is φ = 344949192.

The previous prime is 345406223. The next prime is 345406253. The reversal of 345406231 is 132604543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345406231 - 2³ = 345406223 is a prime.

It is a super-2 number, since 2×345406231² = 238610928827250722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345406231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345406331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227385 + ... + 228898.

It is an arithmetic number, because the mean of its divisors is an integer number (86465818).

Almost surely, 2^345406231 is an apocalyptic number.

345406231 is a deficient number, since it is larger than the sum of its proper divisors (457041).

345406231 is an equidigital number, since it uses as much as digits as its factorization.

345406231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457040.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 345406231 is about 18585.1077747749. The cubic root of 345406231 is about 701.6330789498.

The spelling of 345406231 in words is "three hundred forty-five million, four hundred six thousand, two hundred thirty-one".