2113432331 has 4 divisors (see below), whose sum is σ = 2113589664. Its totient is φ = 2113275000.

The previous prime is 2113432247. The next prime is 2113432357. The reversal of 2113432331 is 1332343112.

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 2113432331 - 2²⁶ = 2046323467 is a prime.

It is a super-2 number, since 2×2113432331² = 8933192435432187122, 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 = 2113432297 and 2113432306.

It is not an unprimeable number, because it can be changed into a prime (2113432361) 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, 56420 + ... + 86081.

It is an arithmetic number, because the mean of its divisors is an integer number (528397416).

Almost surely, 2^2113432331 is an apocalyptic number.

2113432331 is a deficient number, since it is larger than the sum of its proper divisors (157333).

2113432331 is a wasteful number, since it uses less digits than its factorization.

2113432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157332.

The product of its digits is 1296, while the sum is 23.

The square root of 2113432331 is about 45972.0820824987. The cubic root of 2113432331 is about 1283.3037075449.

Adding to 2113432331 its reverse (1332343112), we get a palindrome (3445775443).

The spelling of 2113432331 in words is "two billion, one hundred thirteen million, four hundred thirty-two thousand, three hundred thirty-one".