73500131 has 4 divisors (see below), whose sum is σ = 73829952. Its totient is φ = 73170312.

The previous prime is 73500127. The next prime is 73500143. The reversal of 73500131 is 13100537.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13100537 = 59 ⋅222043.

It is a cyclic number.

It is not a de Polignac number, because 73500131 - 2² = 73500127 is a prime.

It is a super-2 number, since 2×73500131² = 10804538514034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73500121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164576 + ... + 165021.

It is an arithmetic number, because the mean of its divisors is an integer number (18457488).

Almost surely, 2^73500131 is an apocalyptic number.

73500131 is a deficient number, since it is larger than the sum of its proper divisors (329821).

73500131 is a wasteful number, since it uses less digits than its factorization.

73500131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329820.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 73500131 is about 8573.2217398129. The cubic root of 73500131 is about 418.8861852738.

Adding to 73500131 its reverse (13100537), we get a palindrome (86600668).

The spelling of 73500131 in words is "seventy-three million, five hundred thousand, one hundred thirty-one".