345045023 has 4 divisors (see below), whose sum is σ = 347242920. Its totient is φ = 342847128.

The previous prime is 345045013. The next prime is 345045037. The reversal of 345045023 is 320540543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320540543 = 61 ⋅5254763.

It is a cyclic number.

It is not a de Polignac number, because 345045023 - 2¹⁴ = 345028639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345044983 and 345045001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345045013) 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, 1098713 + ... + 1099026.

It is an arithmetic number, because the mean of its divisors is an integer number (86810730).

Almost surely, 2^345045023 is an apocalyptic number.

345045023 is a deficient number, since it is larger than the sum of its proper divisors (2197897).

345045023 is a wasteful number, since it uses less digits than its factorization.

345045023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197896.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 345045023 is about 18575.3875598869. The cubic root of 345045023 is about 701.3884164307.

Adding to 345045023 its reverse (320540543), we get a palindrome (665585566).

The spelling of 345045023 in words is "three hundred forty-five million, forty-five thousand, twenty-three".