2112531451 has 4 divisors (see below), whose sum is σ = 2141470312. Its totient is φ = 2083592592.

The previous prime is 2112531433. The next prime is 2112531461. The reversal of 2112531451 is 1541352112.

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 2112531451 - 2¹¹ = 2112529403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112531431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14469321 + ... + 14469466.

It is an arithmetic number, because the mean of its divisors is an integer number (535367578).

Almost surely, 2^2112531451 is an apocalyptic number.

2112531451 is a deficient number, since it is larger than the sum of its proper divisors (28938861).

2112531451 is an equidigital number, since it uses as much as digits as its factorization.

2112531451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28938860.

The product of its digits is 1200, while the sum is 25.

The square root of 2112531451 is about 45962.2829176271. The cubic root of 2112531451 is about 1283.1213395971.

Adding to 2112531451 its reverse (1541352112), we get a palindrome (3653883563).

The spelling of 2112531451 in words is "two billion, one hundred twelve million, five hundred thirty-one thousand, four hundred fifty-one".