31402321144403 has 24 divisors (see below), whose sum is σ = 34667673440400. Its totient is φ = 28422638266880.

The previous prime is 31402321144393. The next prime is 31402321144487. The reversal of 31402321144403 is 30444112320413.

It is a de Polignac number, because none of the positive numbers 2^k-31402321144403 is a prime.

It is a super-2 number, since 2×31402321144403² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31402321144403.

It is not an unprimeable number, because it can be changed into a prime (31402321644403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390686603 + ... + 390766971.

It is an arithmetic number, because the mean of its divisors is an integer number (1444486393350).

Almost surely, 2^{31402321144403} is an apocalyptic number.

31402321144403 is a deficient number, since it is larger than the sum of its proper divisors (3265352295997).

31402321144403 is a wasteful number, since it uses less digits than its factorization.

31402321144403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94483 (or 94472 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31402321144403 its reverse (30444112320413), we get a palindrome (61846433464816).

The spelling of 31402321144403 in words is "thirty-one trillion, four hundred two billion, three hundred twenty-one million, one hundred forty-four thousand, four hundred three".