73103531 has 8 divisors (see below), whose sum is σ = 73764864. Its totient is φ = 72445480.

The previous prime is 73103521. The next prime is 73103551. The reversal of 73103531 is 13530137.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73103531 is a prime.

It is a super-2 number, since 2×73103531² = 10688252489335922, 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 = 73103497 and 73103506.

It is not an unprimeable number, because it can be changed into a prime (73103501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65726 + ... + 66828.

It is an arithmetic number, because the mean of its divisors is an integer number (9220608).

Almost surely, 2^73103531 is an apocalyptic number.

73103531 is a deficient number, since it is larger than the sum of its proper divisors (661333).

73103531 is a wasteful number, since it uses less digits than its factorization.

73103531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 73103531 is about 8550.0602921851. The cubic root of 73103531 is about 418.1314021838.

Adding to 73103531 its reverse (13530137), we get a palindrome (86633668).

The spelling of 73103531 in words is "seventy-three million, one hundred three thousand, five hundred thirty-one".