74135231 has 4 divisors (see below), whose sum is σ = 74326200. Its totient is φ = 73944264.

The previous prime is 74135227. The next prime is 74135239. The reversal of 74135231 is 13253147.

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

It is a cyclic number.

It is not a de Polignac number, because 74135231 - 2² = 74135227 is a prime.

It is a super-2 number, since 2×74135231² = 10992064950846722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74135231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74135239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94901 + ... + 95678.

It is an arithmetic number, because the mean of its divisors is an integer number (18581550).

Almost surely, 2^74135231 is an apocalyptic number.

74135231 is a deficient number, since it is larger than the sum of its proper divisors (190969).

74135231 is a wasteful number, since it uses less digits than its factorization.

74135231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190968.

The product of its digits is 2520, while the sum is 26.

The square root of 74135231 is about 8610.1818215413. The cubic root of 74135231 is about 420.0892308522.

Adding to 74135231 its reverse (13253147), we get a palindrome (87388378).

The spelling of 74135231 in words is "seventy-four million, one hundred thirty-five thousand, two hundred thirty-one".