12403144331 has 8 divisors (see below), whose sum is σ = 12814813440. Its totient is φ = 11997076392.

The previous prime is 12403144301. The next prime is 12403144337. The reversal of 12403144331 is 13344130421.

It is a happy number.

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 12403144331 - 2²² = 12398950027 is a prime.

It is a super-2 number, since 2×12403144331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12403144331.

It is not an unprimeable number, because it can be changed into a prime (12403144337) 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, 1395791 + ... + 1404648.

It is an arithmetic number, because the mean of its divisors is an integer number (1601851680).

Almost surely, 2^12403144331 is an apocalyptic number.

12403144331 is a deficient number, since it is larger than the sum of its proper divisors (411669109).

12403144331 is a wasteful number, since it uses less digits than its factorization.

12403144331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800585.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 12403144331 its reverse (13344130421), we get a palindrome (25747274752).

The spelling of 12403144331 in words is "twelve billion, four hundred three million, one hundred forty-four thousand, three hundred thirty-one".