2143502431 has 32 divisors (see below), whose sum is σ = 2531865600. Its totient is φ = 1777095936.

The previous prime is 2143502419. The next prime is 2143502437. The reversal of 2143502431 is 1342053412.

It is not a de Polignac number, because 2143502431 - 2¹¹ = 2143500383 is a prime.

It is a super-2 number, since 2×2143502431² = 9189205343405819522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143502396 and 2143502405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143502437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10771270 + ... + 10771468.

It is an arithmetic number, because the mean of its divisors is an integer number (79120800).

Almost surely, 2^2143502431 is an apocalyptic number.

2143502431 is a deficient number, since it is larger than the sum of its proper divisors (388363169).

2143502431 is a wasteful number, since it uses less digits than its factorization.

2143502431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2143502431 is about 46297.9743725360. The cubic root of 2143502431 is about 1289.3613871306.

Adding to 2143502431 its reverse (1342053412), we get a palindrome (3485555843).

The spelling of 2143502431 in words is "two billion, one hundred forty-three million, five hundred two thousand, four hundred thirty-one".