73000431 has 24 divisors (see below), whose sum is σ = 127599264. Its totient is φ = 39260160.

The previous prime is 73000427. The next prime is 73000439. The reversal of 73000431 is 13400037.

It is not a de Polignac number, because 73000431 - 2² = 73000427 is a prime.

It is a super-2 number, since 2×73000431² = 10658125852371522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73000439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33010 + ... + 35151.

It is an arithmetic number, because the mean of its divisors is an integer number (5316636).

Almost surely, 2^73000431 is an apocalyptic number.

73000431 is a deficient number, since it is larger than the sum of its proper divisors (54598833).

73000431 is a wasteful number, since it uses less digits than its factorization.

73000431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68191 (or 68188 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 73000431 is about 8544.0289676475. The cubic root of 73000431 is about 417.9347421457.

Adding to 73000431 its reverse (13400037), we get a palindrome (86400468).

The spelling of 73000431 in words is "seventy-three million, four hundred thirty-one", and thus it is an aban number.