2119727231 has 4 divisors (see below), whose sum is σ = 2121067872. Its totient is φ = 2118386592.

The previous prime is 2119727227. The next prime is 2119727249. The reversal of 2119727231 is 1327279112.

It is a happy number.

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 2119727231 - 2² = 2119727227 is a prime.

It is a super-2 number, since 2×2119727231² = 8986487067685854722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2119727191 and 2119727200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119727201) 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, 667946 + ... + 671111.

It is an arithmetic number, because the mean of its divisors is an integer number (530266968).

Almost surely, 2^2119727231 is an apocalyptic number.

2119727231 is a deficient number, since it is larger than the sum of its proper divisors (1340641).

2119727231 is a wasteful number, since it uses less digits than its factorization.

2119727231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340640.

The product of its digits is 10584, while the sum is 35.

The square root of 2119727231 is about 46040.4955555433. The cubic root of 2119727231 is about 1284.5765598002.

The spelling of 2119727231 in words is "two billion, one hundred nineteen million, seven hundred twenty-seven thousand, two hundred thirty-one".