2231077765 has 16 divisors (see below), whose sum is σ = 3096632448. Its totient is φ = 1511447616.

The previous prime is 2231077711. The next prime is 2231077819. The reversal of 2231077765 is 5677701322.

It is a happy number.

2231077765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2231077711) and next prime (2231077819).

It is not a de Polignac number, because 2231077765 - 2²⁵ = 2197523333 is a prime.

It is a super-3 number, since 3×2231077765³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381102 + ... + 386911.

It is an arithmetic number, because the mean of its divisors is an integer number (193539528).

Almost surely, 2^2231077765 is an apocalyptic number.

It is an amenable number.

2231077765 is a deficient number, since it is larger than the sum of its proper divisors (865554683).

2231077765 is an equidigital number, since it uses as much as digits as its factorization.

2231077765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768108.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 2231077765 is about 47234.2859054734. The cubic root of 2231077765 is about 1306.6869968188.

The spelling of 2231077765 in words is "two billion, two hundred thirty-one million, seventy-seven thousand, seven hundred sixty-five".