73325431 has 2 divisors, whose sum is σ = 73325432. Its totient is φ = 73325430.

The previous prime is 73325429. The next prime is 73325443. The reversal of 73325431 is 13452337.

It is a weak prime.

It is an emirp because it is prime and its reverse (13452337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73325431 - 2¹ = 73325429 is a prime.

It is a super-2 number, since 2×73325431² = 10753237662671522, which contains 22 as substring.

Together with 73325429, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73325431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73325411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36662715 + 36662716.

It is an arithmetic number, because the mean of its divisors is an integer number (36662716).

Almost surely, 2^73325431 is an apocalyptic number.

73325431 is a deficient number, since it is larger than the sum of its proper divisors (1).

73325431 is an equidigital number, since it uses as much as digits as its factorization.

73325431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 28.

The square root of 73325431 is about 8563.0269764844. The cubic root of 73325431 is about 418.5540431334.

Adding to 73325431 its reverse (13452337), we get a palindrome (86777768).

The spelling of 73325431 in words is "seventy-three million, three hundred twenty-five thousand, four hundred thirty-one".