31321013321403 has 24 divisors (see below), whose sum is σ = 51285869769680. Its totient is φ = 18260023959360.

The previous prime is 31321013321383. The next prime is 31321013321449. The reversal of 31321013321403 is 30412331012313.

31321013321403 is a `hidden beast` number, since 3 + 1 + 3 + 210 + 13 + 32 + 1 + 403 = 666.

It is not a de Polignac number, because 31321013321403 - 2²² = 31321009127099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31321013321903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7044760108 + ... + 7044764553.

Almost surely, 2^{31321013321403} is an apocalyptic number.

31321013321403 is a deficient number, since it is larger than the sum of its proper divisors (19964856448277).

31321013321403 is a wasteful number, since it uses less digits than its factorization.

31321013321403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14089524699 (or 14089524696 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31321013321403 its reverse (30412331012313), we get a palindrome (61733344333716).

The spelling of 31321013321403 in words is "thirty-one trillion, three hundred twenty-one billion, thirteen million, three hundred twenty-one thousand, four hundred three".