2126313451 has 4 divisors (see below), whose sum is σ = 2135210400. Its totient is φ = 2117416504.

The previous prime is 2126313443. The next prime is 2126313461. The reversal of 2126313451 is 1543136212.

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 2126313451 - 2³ = 2126313443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126313461) 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, 4448116 + ... + 4448593.

It is an arithmetic number, because the mean of its divisors is an integer number (533802600).

Almost surely, 2^2126313451 is an apocalyptic number.

2126313451 is a deficient number, since it is larger than the sum of its proper divisors (8896949).

2126313451 is an equidigital number, since it uses as much as digits as its factorization.

2126313451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8896948.

The product of its digits is 4320, while the sum is 28.

The square root of 2126313451 is about 46111.9664620801. The cubic root of 2126313451 is about 1285.9056233130.

Adding to 2126313451 its reverse (1543136212), we get a palindrome (3669449663).

The spelling of 2126313451 in words is "two billion, one hundred twenty-six million, three hundred thirteen thousand, four hundred fifty-one".