31330310120113 has 4 divisors (see below), whose sum is σ = 31330379119140. Its totient is φ = 31330241121088.

The previous prime is 31330310120101. The next prime is 31330310120117. The reversal of 31330310120113 is 31102101303313.

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 25491673949184 + 5838636170929 = 5048928^2 + 2416327^2 .

It is a cyclic number.

It is not a de Polignac number, because 31330310120113 - 2⁹ = 31330310119601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31330310120117) 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, 33813868 + ... + 34728061.

It is an arithmetic number, because the mean of its divisors is an integer number (7832594779785).

Almost surely, 2^{31330310120113} is an apocalyptic number.

It is an amenable number.

31330310120113 is a deficient number, since it is larger than the sum of its proper divisors (68999027).

31330310120113 is an equidigital number, since it uses as much as digits as its factorization.

31330310120113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68999026.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31330310120113 its reverse (31102101303313), we get a palindrome (62432411423426).

The spelling of 31330310120113 in words is "thirty-one trillion, three hundred thirty billion, three hundred ten million, one hundred twenty thousand, one hundred thirteen".