12432143031 has 32 divisors (see below), whose sum is σ = 20879513088. Its totient is φ = 6391664640.

The previous prime is 12432143029. The next prime is 12432143039. The reversal of 12432143031 is 13034123421.

12432143031 = 29793² + 29794² + ... + 29806².

It is a happy number.

It is not a de Polignac number, because 12432143031 - 2¹ = 12432143029 is a prime.

It is a super-4 number, since 4×12432143031⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 12432142992 and 12432143010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432143039) 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, 255010 + ... + 299823.

It is an arithmetic number, because the mean of its divisors is an integer number (652484784).

Almost surely, 2^12432143031 is an apocalyptic number.

12432143031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12432143031 is a deficient number, since it is larger than the sum of its proper divisors (8447370057).

12432143031 is a wasteful number, since it uses less digits than its factorization.

12432143031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554951.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12432143031 its reverse (13034123421), we get a palindrome (25466266452).

The spelling of 12432143031 in words is "twelve billion, four hundred thirty-two million, one hundred forty-three thousand, thirty-one".