31020331120113 has 8 divisors (see below), whose sum is σ = 41361629912128. Its totient is φ = 20679626537424.

The previous prime is 31020331120001. The next prime is 31020331120117. The reversal of 31020331120113 is 31102113302013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31020331120113 - 2¹² = 31020331116017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020331120113.

It is not an unprimeable number, because it can be changed into a prime (31020331120117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148430506 + ... + 148639347.

It is an arithmetic number, because the mean of its divisors is an integer number (5170203739016).

Almost surely, 2^{31020331120113} is an apocalyptic number.

It is an amenable number.

31020331120113 is a deficient number, since it is larger than the sum of its proper divisors (10341298792015).

31020331120113 is a wasteful number, since it uses less digits than its factorization.

31020331120113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297104663.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31020331120113 its reverse (31102113302013), we get a palindrome (62122444422126).

It can be divided in two parts, 31020 and 331120113, that added together give a palindrome (331151133).

The spelling of 31020331120113 in words is "thirty-one trillion, twenty billion, three hundred thirty-one million, one hundred twenty thousand, one hundred thirteen".