12403344331 has 8 divisors (see below), whose sum is σ = 14262216704. Its totient is φ = 10566213480.

The previous prime is 12403344329. The next prime is 12403344337. The reversal of 12403344331 is 13344330421.

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 12403344331 - 2¹ = 12403344329 is a prime.

It is a super-2 number, since 2×12403344331² (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 12403344331.

It is not an unprimeable number, because it can be changed into a prime (12403344337) 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, 5434155 + ... + 5436436.

It is an arithmetic number, because the mean of its divisors is an integer number (1782777088).

Almost surely, 2^12403344331 is an apocalyptic number.

12403344331 is a deficient number, since it is larger than the sum of its proper divisors (1858872373).

12403344331 is a wasteful number, since it uses less digits than its factorization.

12403344331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10870761.

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

Adding to 12403344331 its reverse (13344330421), we get a palindrome (25747674752).

The spelling of 12403344331 in words is "twelve billion, four hundred three million, three hundred forty-four thousand, three hundred thirty-one".