73735231 has 4 divisors (see below), whose sum is σ = 73774152. Its totient is φ = 73696312.

The previous prime is 73735213. The next prime is 73735241. The reversal of 73735231 is 13253737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13253737 = 7 ⋅1893391.

It is a cyclic number.

It is not a de Polignac number, because 73735231 - 2¹¹ = 73733183 is a prime.

It is a super-2 number, since 2×73735231² = 10873768581246722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73735193 and 73735202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73735241) 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, 16465 + ... + 20458.

It is an arithmetic number, because the mean of its divisors is an integer number (18443538).

Almost surely, 2^73735231 is an apocalyptic number.

73735231 is a deficient number, since it is larger than the sum of its proper divisors (38921).

73735231 is a wasteful number, since it uses less digits than its factorization.

73735231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38920.

The product of its digits is 13230, while the sum is 31.

The square root of 73735231 is about 8586.9220911803. The cubic root of 73735231 is about 419.3323310896.

Adding to 73735231 its reverse (13253737), we get a palindrome (86988968).

The spelling of 73735231 in words is "seventy-three million, seven hundred thirty-five thousand, two hundred thirty-one".