7765000231 has 4 divisors (see below), whose sum is σ = 7767178264. Its totient is φ = 7762822200.

The previous prime is 7765000219. The next prime is 7765000247. The reversal of 7765000231 is 1320005677.

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 7765000231 - 2¹⁷ = 7764869159 is a prime.

It is a super-2 number, since 2×7765000231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7765000193 and 7765000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7765060231) 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, 1083660 + ... + 1090801.

It is an arithmetic number, because the mean of its divisors is an integer number (1941794566).

Almost surely, 2^7765000231 is an apocalyptic number.

7765000231 is the 55732-nd centered pentagonal number.

7765000231 is a deficient number, since it is larger than the sum of its proper divisors (2178033).

7765000231 is a wasteful number, since it uses less digits than its factorization.

7765000231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178032.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 7765000231 is about 88119.2387109648. The cubic root of 7765000231 is about 1980.2217408874.

The spelling of 7765000231 in words is "seven billion, seven hundred sixty-five million, two hundred thirty-one", and thus it is an aban number.