73003131 has 6 divisors (see below), whose sum is σ = 105448980. Its totient is φ = 48668748.

The previous prime is 73003129. The next prime is 73003141. The reversal of 73003131 is 13130037.

It is not a de Polignac number, because 73003131 - 2¹ = 73003129 is a prime.

It is a super-2 number, since 2×73003131² = 10658914271606322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73003141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4055721 + ... + 4055738.

It is an arithmetic number, because the mean of its divisors is an integer number (17574830).

Almost surely, 2^73003131 is an apocalyptic number.

73003131 is a deficient number, since it is larger than the sum of its proper divisors (32445849).

73003131 is a wasteful number, since it uses less digits than its factorization.

73003131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8111465 (or 8111462 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 18.

The square root of 73003131 is about 8544.1869712688. The cubic root of 73003131 is about 417.9398946719.

Adding to 73003131 its reverse (13130037), we get a palindrome (86133168).

The spelling of 73003131 in words is "seventy-three million, three thousand, one hundred thirty-one".