73431441 has 28 divisors (see below), whose sum is σ = 110803968. Its totient is φ = 48640824.

The previous prime is 73431439. The next prime is 73431473. The reversal of 73431441 is 14413437.

It is not a de Polignac number, because 73431441 - 2¹ = 73431439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (73431431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 191536 + ... + 191918.

Almost surely, 2^73431441 is an apocalyptic number.

It is an amenable number.

73431441 is a deficient number, since it is larger than the sum of its proper divisors (37372527).

73431441 is an equidigital number, since it uses as much as digits as its factorization.

73431441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 649 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 73431441 is about 8569.2147248158. The cubic root of 73431441 is about 418.7556537144.

Adding to 73431441 its reverse (14413437), we get a palindrome (87844878).

The spelling of 73431441 in words is "seventy-three million, four hundred thirty-one thousand, four hundred forty-one".