2154454431 has 4 divisors (see below), whose sum is σ = 2872605912. Its totient is φ = 1436302952.

The previous prime is 2154454381. The next prime is 2154454439. The reversal of 2154454431 is 1344544512.

It is a happy number.

2154454431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2154454431 - 2⁹ = 2154453919 is a prime.

It is a super-2 number, since 2×2154454431² = 9283347790511067522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2154454392 and 2154454401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154454439) 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, 359075736 + ... + 359075741.

It is an arithmetic number, because the mean of its divisors is an integer number (718151478).

Almost surely, 2^2154454431 is an apocalyptic number.

2154454431 is a deficient number, since it is larger than the sum of its proper divisors (718151481).

2154454431 is an equidigital number, since it uses as much as digits as its factorization.

2154454431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718151480.

The product of its digits is 38400, while the sum is 33.

The square root of 2154454431 is about 46416.1009887733. The cubic root of 2154454431 is about 1291.5536098027.

Adding to 2154454431 its reverse (1344544512), we get a palindrome (3498998943).

The spelling of 2154454431 in words is "two billion, one hundred fifty-four million, four hundred fifty-four thousand, four hundred thirty-one".