345432123 has 6 divisors (see below), whose sum is σ = 498957524. Its totient is φ = 230288076.

The previous prime is 345432107. The next prime is 345432127. The reversal of 345432123 is 321234543.

345432123 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 345432123 - 2⁴ = 345432107 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345432127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19190665 + ... + 19190682.

Almost surely, 2^345432123 is an apocalyptic number.

345432123 is a deficient number, since it is larger than the sum of its proper divisors (153525401).

345432123 is a wasteful number, since it uses less digits than its factorization.

345432123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38381353 (or 38381350 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 345432123 is about 18585.8043409480. The cubic root of 345432123 is about 701.6506102199.

Adding to 345432123 its reverse (321234543), we get a palindrome (666666666).

The spelling of 345432123 in words is "three hundred forty-five million, four hundred thirty-two thousand, one hundred twenty-three".