2689231231 has 4 divisors (see below), whose sum is σ = 2806154352. Its totient is φ = 2572308112.

The previous prime is 2689231229. The next prime is 2689231243. The reversal of 2689231231 is 1321329862.

2689231231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2689231231 - 2¹ = 2689231229 is a prime.

It is a super-2 number, since 2×2689231231² = 14463929227571550722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689231261) 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, 58461526 + ... + 58461571.

It is an arithmetic number, because the mean of its divisors is an integer number (701538588).

Almost surely, 2^2689231231 is an apocalyptic number.

2689231231 is a deficient number, since it is larger than the sum of its proper divisors (116923121).

2689231231 is a wasteful number, since it uses less digits than its factorization.

2689231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116923120.

The product of its digits is 31104, while the sum is 37.

The square root of 2689231231 is about 51857.7981696099. The cubic root of 2689231231 is about 1390.6229168077.

The spelling of 2689231231 in words is "two billion, six hundred eighty-nine million, two hundred thirty-one thousand, two hundred thirty-one".