1220312331313 has 8 divisors (see below), whose sum is σ = 1225319276160. Its totient is φ = 1215307392000.

The previous prime is 1220312331281. The next prime is 1220312331331. The reversal of 1220312331313 is 3131332130221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220312331313 - 2⁵ = 1220312331281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220312331373) 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, 724188 + ... + 1721938.

It is an arithmetic number, because the mean of its divisors is an integer number (153164909520).

Almost surely, 2^{1220312331313} is an apocalyptic number.

It is an amenable number.

1220312331313 is a deficient number, since it is larger than the sum of its proper divisors (5006944847).

1220312331313 is an equidigital number, since it uses as much as digits as its factorization.

1220312331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002767.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1220312331313 its reverse (3131332130221), we get a palindrome (4351644461534).

The spelling of 1220312331313 in words is "one trillion, two hundred twenty billion, three hundred twelve million, three hundred thirty-one thousand, three hundred thirteen".