74733231 has 4 divisors (see below), whose sum is σ = 99644312. Its totient is φ = 49822152.

The previous prime is 74733227. The next prime is 74733257. The reversal of 74733231 is 13233747.

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

It is not a de Polignac number, because 74733231 - 2² = 74733227 is a prime.

It is a super-2 number, since 2×74733231² = 11170111631398722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74733331) 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, 12455536 + ... + 12455541.

It is an arithmetic number, because the mean of its divisors is an integer number (24911078).

Almost surely, 2^74733231 is an apocalyptic number.

74733231 is a deficient number, since it is larger than the sum of its proper divisors (24911081).

74733231 is a wasteful number, since it uses less digits than its factorization.

74733231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24911080.

The product of its digits is 10584, while the sum is 30.

The square root of 74733231 is about 8644.8384021912. The cubic root of 74733231 is about 421.2157348995.

Adding to 74733231 its reverse (13233747), we get a palindrome (87966978).

The spelling of 74733231 in words is "seventy-four million, seven hundred thirty-three thousand, two hundred thirty-one".