73001131 has 6 divisors (see below), whose sum is σ = 84919740. Its totient is φ = 62572356.

The previous prime is 73001119. The next prime is 73001141. The reversal of 73001131 is 13110037.

It is a happy number.

It is not a de Polignac number, because 73001131 - 2⁷ = 73001003 is a prime.

It is a super-2 number, since 2×73001131² = 10658330254558322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73001141) 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, 744861 + ... + 744958.

It is an arithmetic number, because the mean of its divisors is an integer number (14153290).

Almost surely, 2^73001131 is an apocalyptic number.

73001131 is a deficient number, since it is larger than the sum of its proper divisors (11918609).

73001131 is a wasteful number, since it uses less digits than its factorization.

73001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489833 (or 1489826 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 16.

The square root of 73001131 is about 8544.0699318299. The cubic root of 73001131 is about 417.9360779980.

Adding to 73001131 its reverse (13110037), we get a palindrome (86111168).

The spelling of 73001131 in words is "seventy-three million, one thousand, one hundred thirty-one".