2143431433 has 16 divisors (see below), whose sum is σ = 2627646336. Its totient is φ = 1720477440.

The previous prime is 2143431403. The next prime is 2143431457. The reversal of 2143431433 is 3341343412.

It is a de Polignac number, because none of the positive numbers 2^k-2143431433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143431403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322560 + ... + 329137.

It is an arithmetic number, because the mean of its divisors is an integer number (164227896).

Almost surely, 2^2143431433 is an apocalyptic number.

2143431433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2143431433 is a deficient number, since it is larger than the sum of its proper divisors (484214903).

2143431433 is a wasteful number, since it uses less digits than its factorization.

2143431433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651744.

The product of its digits is 10368, while the sum is 28.

The square root of 2143431433 is about 46297.2076155787. The cubic root of 2143431433 is about 1289.3471513812.

Adding to 2143431433 its reverse (3341343412), we get a palindrome (5484774845).

The spelling of 2143431433 in words is "two billion, one hundred forty-three million, four hundred thirty-one thousand, four hundred thirty-three".