73331131 has 4 divisors (see below), whose sum is σ = 73352664. Its totient is φ = 73309600.

The previous prime is 73331123. The next prime is 73331179. The reversal of 73331131 is 13113337.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73331131 - 2³ = 73331123 is a prime.

It is a super-2 number, since 2×73331131² = 10754909547478322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73331101) 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 3 ways as a sum of consecutive naturals, for example, 4405 + ... + 12886.

It is an arithmetic number, because the mean of its divisors is an integer number (18338166).

Almost surely, 2^73331131 is an apocalyptic number.

73331131 is a deficient number, since it is larger than the sum of its proper divisors (21533).

73331131 is a wasteful number, since it uses less digits than its factorization.

73331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21532.

The product of its digits is 567, while the sum is 22.

The square root of 73331131 is about 8563.3597962482. The cubic root of 73331131 is about 418.5648883759.

Adding to 73331131 its reverse (13113337), we get a palindrome (86444468).

It can be divided in two parts, 7333 and 1131, that added together give a square (8464 = 92²).

The spelling of 73331131 in words is "seventy-three million, three hundred thirty-one thousand, one hundred thirty-one".