73687231 has 16 divisors (see below), whose sum is σ = 81375840. Its totient is φ = 66411520.

The previous prime is 73687219. The next prime is 73687241. The reversal of 73687231 is 13278637.

It is not a de Polignac number, because 73687231 - 2⁵ = 73687199 is a prime.

It is a super-2 number, since 2×73687231² = 10859616024894722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73687241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66996 + ... + 68086.

It is an arithmetic number, because the mean of its divisors is an integer number (5085990).

Almost surely, 2^73687231 is an apocalyptic number.

73687231 is a deficient number, since it is larger than the sum of its proper divisors (7688609).

73687231 is a wasteful number, since it uses less digits than its factorization.

73687231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274.

The product of its digits is 42336, while the sum is 37.

The square root of 73687231 is about 8584.1266882543. The cubic root of 73687231 is about 419.2413193221.

The spelling of 73687231 in words is "seventy-three million, six hundred eighty-seven thousand, two hundred thirty-one".