31320113003 has 8 divisors (see below), whose sum is σ = 32065902000. Its totient is φ = 30591660624.

The previous prime is 31320112969. The next prime is 31320113009. The reversal of 31320113003 is 30031102313.

It is not a de Polignac number, because 31320113003 - 2¹⁶ = 31320047467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320113009) 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 7 ways as a sum of consecutive naturals, for example, 117458 + ... + 276471.

It is an arithmetic number, because the mean of its divisors is an integer number (4008237750).

Almost surely, 2^31320113003 is an apocalyptic number.

31320113003 is a deficient number, since it is larger than the sum of its proper divisors (745788997).

31320113003 is an frugal number, since it uses more digits than its factorization.

31320113003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394058 (or 393972 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31320113003 its reverse (30031102313), we get a palindrome (61351215316).

The spelling of 31320113003 in words is "thirty-one billion, three hundred twenty million, one hundred thirteen thousand, three".