31003123100113 has 4 divisors (see below), whose sum is σ = 31841045346100. Its totient is φ = 30165200854128.

The previous prime is 31003123100093. The next prime is 31003123100119. The reversal of 31003123100113 is 31100132130013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17325049301569 + 13678073798544 = 4162337^2 + 3698388^2 .

It is a cyclic number.

It is not a de Polignac number, because 31003123100113 - 2⁴¹ = 28804099844561 is a prime.

It is a super-3 number, since 3×31003123100113³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31003123100119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418961122938 + ... + 418961123011.

It is an arithmetic number, because the mean of its divisors is an integer number (7960261336525).

Almost surely, 2^{31003123100113} is an apocalyptic number.

It is an amenable number.

31003123100113 is a deficient number, since it is larger than the sum of its proper divisors (837922245987).

31003123100113 is an equidigital number, since it uses as much as digits as its factorization.

31003123100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837922245986.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31003123100113 its reverse (31100132130013), we get a palindrome (62103255230126).

The spelling of 31003123100113 in words is "thirty-one trillion, three billion, one hundred twenty-three million, one hundred thousand, one hundred thirteen".