2231319977 has 4 divisors (see below), whose sum is σ = 2253412356. Its totient is φ = 2209227600.

The previous prime is 2231319941. The next prime is 2231320019. The reversal of 2231319977 is 7799131322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1944898201 + 286421776 = 44101^2 + 16924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231319977 - 2¹⁰ = 2231318953 is a prime.

It is a super-3 number, since 3×2231319977³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231319577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11046038 + ... + 11046239.

It is an arithmetic number, because the mean of its divisors is an integer number (563353089).

Almost surely, 2^2231319977 is an apocalyptic number.

It is an amenable number.

2231319977 is a deficient number, since it is larger than the sum of its proper divisors (22092379).

2231319977 is a wasteful number, since it uses less digits than its factorization.

2231319977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22092378.

The product of its digits is 142884, while the sum is 44.

The square root of 2231319977 is about 47236.8497785362. The cubic root of 2231319977 is about 1306.7342809646.

The spelling of 2231319977 in words is "two billion, two hundred thirty-one million, three hundred nineteen thousand, nine hundred seventy-seven".