233151145 has 4 divisors (see below), whose sum is σ = 279781380. Its totient is φ = 186520912.

The previous prime is 233151143. The next prime is 233151169. The reversal of 233151145 is 541151332.

It is a happy number.

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 24088464 + 209062681 = 4908^2 + 14459^2 .

It is a cyclic number.

It is not a de Polignac number, because 233151145 - 2¹ = 233151143 is a prime.

It is a super-2 number, since 2×233151145² = 108718912829622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (233151143) 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, 23315110 + ... + 23315119.

It is an arithmetic number, because the mean of its divisors is an integer number (69945345).

Almost surely, 2^233151145 is an apocalyptic number.

It is an amenable number.

233151145 is a deficient number, since it is larger than the sum of its proper divisors (46630235).

233151145 is an equidigital number, since it uses as much as digits as its factorization.

233151145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46630234.

The product of its digits is 1800, while the sum is 25.

The square root of 233151145 is about 15269.2876389175. The cubic root of 233151145 is about 615.4779768468.

The spelling of 233151145 in words is "two hundred thirty-three million, one hundred fifty-one thousand, one hundred forty-five".