234273643 has 4 divisors (see below), whose sum is σ = 234694800. Its totient is φ = 233852488.

The previous prime is 234273623. The next prime is 234273649. The reversal of 234273643 is 346372432.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234273643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234273599 and 234273608.

It is not an unprimeable number, because it can be changed into a prime (234273649) 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, 209743 + ... + 210856.

It is an arithmetic number, because the mean of its divisors is an integer number (58673700).

Almost surely, 2^234273643 is an apocalyptic number.

234273643 is a deficient number, since it is larger than the sum of its proper divisors (421157).

234273643 is an equidigital number, since it uses as much as digits as its factorization.

234273643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421156.

The product of its digits is 72576, while the sum is 34.

The square root of 234273643 is about 15306.0002286685. Note that the first 3 decimals coincide. The cubic root of 234273643 is about 616.4641283073.

The spelling of 234273643 in words is "two hundred thirty-four million, two hundred seventy-three thousand, six hundred forty-three".