2113323231 has 4 divisors (see below), whose sum is σ = 2817764312. Its totient is φ = 1408882152.

The previous prime is 2113323221. The next prime is 2113323271. The reversal of 2113323231 is 1323233112.

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

It is not a de Polignac number, because 2113323231 - 2⁶ = 2113323167 is a prime.

It is a super-2 number, since 2×2113323231² = 8932270157368558722, 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 = 2113323198 and 2113323207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113323221) 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, 352220536 + ... + 352220541.

It is an arithmetic number, because the mean of its divisors is an integer number (704441078).

Almost surely, 2^2113323231 is an apocalyptic number.

2113323231 is a deficient number, since it is larger than the sum of its proper divisors (704441081).

2113323231 is an equidigital number, since it uses as much as digits as its factorization.

2113323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704441080.

The product of its digits is 648, while the sum is 21.

The square root of 2113323231 is about 45970.8954774649. The cubic root of 2113323231 is about 1283.2816248501.

Adding to 2113323231 its reverse (1323233112), we get a palindrome (3436556343).

The spelling of 2113323231 in words is "two billion, one hundred thirteen million, three hundred twenty-three thousand, two hundred thirty-one".