2143503131 has 8 divisors (see below), whose sum is σ = 2672419584. Its totient is φ = 1670262120.

The previous prime is 2143503119. The next prime is 2143503149. The reversal of 2143503131 is 1313053412.

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 2143503131 - 2²² = 2139308827 is a prime.

It is a super-2 number, since 2×2143503131² = 9189211345213606322, 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 = 2143503097 and 2143503106.

It is not an unprimeable number, because it can be changed into a prime (2143503181) 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, 13918775 + ... + 13918928.

It is an arithmetic number, because the mean of its divisors is an integer number (334052448).

Almost surely, 2^2143503131 is an apocalyptic number.

2143503131 is a deficient number, since it is larger than the sum of its proper divisors (528916453).

2143503131 is a wasteful number, since it uses less digits than its factorization.

2143503131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27837721.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2143503131 is about 46297.9819322614. The cubic root of 2143503131 is about 1289.3615274855.

Adding to 2143503131 its reverse (1313053412), we get a palindrome (3456556543).

The spelling of 2143503131 in words is "two billion, one hundred forty-three million, five hundred three thousand, one hundred thirty-one".