2131451 has 6 divisors (see below), whose sum is σ = 2479500. Its totient is φ = 1826916.

The previous prime is 2131447. The next prime is 2131457. The reversal of 2131451 is 1541312.

2131451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2131451 - 2² = 2131447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21701 + ... + 21798.

It is an arithmetic number, because the mean of its divisors is an integer number (413250).

2^2131451 is an apocalyptic number.

2131451 is a deficient number, since it is larger than the sum of its proper divisors (348049).

2131451 is an equidigital number, since it uses as much as digits as its factorization.

2131451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43513 (or 43506 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 2131451 is about 1459.9489717110. The cubic root of 2131451 is about 128.6940448718.

Adding to 2131451 its reverse (1541312), we get a palindrome (3672763).

The spelling of 2131451 in words is "two million, one hundred thirty-one thousand, four hundred fifty-one".