2113231329 has 32 divisors (see below), whose sum is σ = 3563827200. Its totient is φ = 1225057680.

The previous prime is 2113231301. The next prime is 2113231333. The reversal of 2113231329 is 9231323112.

2113231329 is a `hidden beast` number, since 2 + 11 + 323 + 1 + 329 = 666.

It is not a de Polignac number, because 2113231329 - 2⁷ = 2113231201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2113231349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147849 + ... + 161510.

It is an arithmetic number, because the mean of its divisors is an integer number (111369600).

Almost surely, 2^2113231329 is an apocalyptic number.

It is an amenable number.

2113231329 is a deficient number, since it is larger than the sum of its proper divisors (1450595871).

2113231329 is a wasteful number, since it uses less digits than its factorization.

2113231329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309402 (or 309396 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 2113231329 is about 45969.8958993818. The cubic root of 2113231329 is about 1283.2630225755.

The spelling of 2113231329 in words is "two billion, one hundred thirteen million, two hundred thirty-one thousand, three hundred twenty-nine".