31220013303313 has 8 divisors (see below), whose sum is σ = 31269859850880. Its totient is φ = 31170188766000.

The previous prime is 31220013303263. The next prime is 31220013303329. The reversal of 31220013303313 is 31330331002213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31220013303313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31220013303373) 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, 2662270 + ... + 8338327.

It is an arithmetic number, because the mean of its divisors is an integer number (3908732481360).

Almost surely, 2^{31220013303313} is an apocalyptic number.

It is an amenable number.

31220013303313 is a deficient number, since it is larger than the sum of its proper divisors (49846547567).

31220013303313 is a wasteful number, since it uses less digits than its factorization.

31220013303313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005127.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31220013303313 its reverse (31330331002213), we get a palindrome (62550344305526).

The spelling of 31220013303313 in words is "thirty-one trillion, two hundred twenty billion, thirteen million, three hundred three thousand, three hundred thirteen".