7730231 has 8 divisors (see below), whose sum is σ = 8239104. Its totient is φ = 7235800.

The previous prime is 7730213. The next prime is 7730243. The reversal of 7730231 is 1320377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7730231 - 2⁶ = 7730167 is a prime.

It is a super-2 number, since 2×7730231² = 119512942626722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7730197 and 7730206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7730201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2495 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (1029888).

Almost surely, 2^7730231 is an apocalyptic number.

7730231 is a deficient number, since it is larger than the sum of its proper divisors (508873).

7730231 is a wasteful number, since it uses less digits than its factorization.

7730231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 7730231 is about 2780.3292970438. The cubic root of 7730231 is about 197.7261714892.

The spelling of 7730231 in words is "seven million, seven hundred thirty thousand, two hundred thirty-one".