2134221231 has 4 divisors (see below), whose sum is σ = 2845628312. Its totient is φ = 1422814152.

The previous prime is 2134221181. The next prime is 2134221241. The reversal of 2134221231 is 1321224312.

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

It is not a de Polignac number, because 2134221231 - 2²¹ = 2132124079 is a prime.

It is a super-2 number, since 2×2134221231² = 9109800525702310722, 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 = 2134221198 and 2134221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134221241) 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, 355703536 + ... + 355703541.

It is an arithmetic number, because the mean of its divisors is an integer number (711407078).

Almost surely, 2^2134221231 is an apocalyptic number.

2134221231 is a deficient number, since it is larger than the sum of its proper divisors (711407081).

2134221231 is an equidigital number, since it uses as much as digits as its factorization.

2134221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711407080.

The product of its digits is 576, while the sum is 21.

The square root of 2134221231 is about 46197.6323094593. The cubic root of 2134221231 is about 1287.4977496552.

Adding to 2134221231 its reverse (1321224312), we get a palindrome (3455445543).

The spelling of 2134221231 in words is "two billion, one hundred thirty-four million, two hundred twenty-one thousand, two hundred thirty-one".