74632331231 has 4 divisors (see below), whose sum is σ = 74653375752. Its totient is φ = 74611286712.

The previous prime is 74632331203. The next prime is 74632331233. The reversal of 74632331231 is 13213323647.

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-74632331231 is a prime.

It is a super-2 number, since 2×74632331231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74632331191 and 74632331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74632331233) 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, 10516940 + ... + 10524033.

It is an arithmetic number, because the mean of its divisors is an integer number (18663343938).

Almost surely, 2^74632331231 is an apocalyptic number.

74632331231 is a deficient number, since it is larger than the sum of its proper divisors (21044521).

74632331231 is a wasteful number, since it uses less digits than its factorization.

74632331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21044520.

The product of its digits is 54432, while the sum is 35.

Adding to 74632331231 its reverse (13213323647), we get a palindrome (87845654878).

The spelling of 74632331231 in words is "seventy-four billion, six hundred thirty-two million, three hundred thirty-one thousand, two hundred thirty-one".