31030030121113 has 4 divisors (see below), whose sum is σ = 31030065433728. Its totient is φ = 31029994808500.

The previous prime is 31030030121093. The next prime is 31030030121149. The reversal of 31030030121113 is 31112103003013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31030030121113 is a prime.

It is a super-2 number, since 2×31030030121113² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31030030121413) 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, 16303681 + ... + 18107182.

It is an arithmetic number, because the mean of its divisors is an integer number (7757516358432).

Almost surely, 2^{31030030121113} is an apocalyptic number.

It is an amenable number.

31030030121113 is a deficient number, since it is larger than the sum of its proper divisors (35312615).

31030030121113 is an equidigital number, since it uses as much as digits as its factorization.

31030030121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35312614.

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

Adding to 31030030121113 its reverse (31112103003013), we get a palindrome (62142133124126).

The spelling of 31030030121113 in words is "thirty-one trillion, thirty billion, thirty million, one hundred twenty-one thousand, one hundred thirteen".