233947913 has 4 divisors (see below), whose sum is σ = 235655700. Its totient is φ = 232240128.

The previous prime is 233947891. The next prime is 233947933. The reversal of 233947913 is 319749332.

233947913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 198330889 + 35617024 = 14083^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 233947913 - 2⁶ = 233947849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233947933) 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, 853688 + ... + 853961.

It is an arithmetic number, because the mean of its divisors is an integer number (58913925).

Almost surely, 2^233947913 is an apocalyptic number.

It is an amenable number.

233947913 is a deficient number, since it is larger than the sum of its proper divisors (1707787).

233947913 is a wasteful number, since it uses less digits than its factorization.

233947913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707786.

The product of its digits is 122472, while the sum is 41.

The square root of 233947913 is about 15295.3559291701. The cubic root of 233947913 is about 616.1782887890.

The spelling of 233947913 in words is "two hundred thirty-three million, nine hundred forty-seven thousand, nine hundred thirteen".