2143431553 has 8 divisors (see below), whose sum is σ = 2388964320. Its totient is φ = 1911170880.

The previous prime is 2143431551. The next prime is 2143431583. The reversal of 2143431553 is 3551343412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2143431553 - 2¹ = 2143431551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143431551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3317683 + ... + 3318328.

It is an arithmetic number, because the mean of its divisors is an integer number (298620540).

Almost surely, 2^2143431553 is an apocalyptic number.

It is an amenable number.

2143431553 is a deficient number, since it is larger than the sum of its proper divisors (245532767).

2143431553 is a wasteful number, since it uses less digits than its factorization.

2143431553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636047.

The product of its digits is 21600, while the sum is 31.

The square root of 2143431553 is about 46297.2089115532. The cubic root of 2143431553 is about 1289.3471754426.

Adding to 2143431553 its reverse (3551343412), we get a palindrome (5694774965).

The spelling of 2143431553 in words is "two billion, one hundred forty-three million, four hundred thirty-one thousand, five hundred fifty-three".