73340431 has 16 divisors (see below), whose sum is σ = 80226720. Its totient is φ = 66769920.

The previous prime is 73340387. The next prime is 73340441. The reversal of 73340431 is 13404337.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 73340431 - 2⁷ = 73340303 is a prime.

It is a super-2 number, since 2×73340431² = 10757637638531522, 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 = 73340396 and 73340405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73340441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96505 + ... + 97261.

It is an arithmetic number, because the mean of its divisors is an integer number (5014170).

Almost surely, 2^73340431 is an apocalyptic number.

73340431 is a deficient number, since it is larger than the sum of its proper divisors (6886289).

73340431 is a wasteful number, since it uses less digits than its factorization.

73340431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 73340431 is about 8563.9027902003. The cubic root of 73340431 is about 418.5825820387.

Adding to 73340431 its reverse (13404337), we get a palindrome (86744768).

The spelling of 73340431 in words is "seventy-three million, three hundred forty thousand, four hundred thirty-one".