73716431 has 2 divisors, whose sum is σ = 73716432. Its totient is φ = 73716430.

The previous prime is 73716421. The next prime is 73716457. The reversal of 73716431 is 13461737.

It is a weak prime.

It is an emirp because it is prime and its reverse (13461737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73716431 - 2¹⁴ = 73700047 is a prime.

It is a super-2 number, since 2×73716431² = 10868224398755522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73716421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36858215 + 36858216.

It is an arithmetic number, because the mean of its divisors is an integer number (36858216).

Almost surely, 2^73716431 is an apocalyptic number.

73716431 is a deficient number, since it is larger than the sum of its proper divisors (1).

73716431 is an equidigital number, since it uses as much as digits as its factorization.

73716431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 32.

The square root of 73716431 is about 8585.8273334606. The cubic root of 73716431 is about 419.2966895208.

It can be divided in two parts, 73716 and 431, that added together give a palindrome (74147).

The spelling of 73716431 in words is "seventy-three million, seven hundred sixteen thousand, four hundred thirty-one".