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1213111313203 = 7093259525013
BaseRepresentation
bin10001101001110011000…
…100011010001100110011
311021222020210221211110011
4101221303010122030303
5124333422444010303
62325143505315351
7153434013011656
oct21516304321463
94258223854404
101213111313203
1142852878a829
12177138635b57
138a51ba616ba
1442a0198b89d
1521850cc916d
hex11a7311a333

1213111313203 has 8 divisors (see below), whose sum is σ = 1215197404400. Its totient is φ = 1211026279968.

The previous prime is 1213111313173. The next prime is 1213111313209. The reversal of 1213111313203 is 3023131113121.

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 1213111313203 - 221 = 1213109216051 is a prime.

It is a super-2 number, since 2×12131113132032 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213111313209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048125 + ... + 2573137.

It is an arithmetic number, because the mean of its divisors is an integer number (151899675550).

Almost surely, 21213111313203 is an apocalyptic number.

1213111313203 is a deficient number, since it is larger than the sum of its proper divisors (2086091197).

1213111313203 is an equidigital number, since it uses as much as digits as its factorization.

1213111313203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528981.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1213111313203 its reverse (3023131113121), we get a palindrome (4236242426324).

The spelling of 1213111313203 in words is "one trillion, two hundred thirteen billion, one hundred eleven million, three hundred thirteen thousand, two hundred three".

Divisors: 1 709 3259 525013 2310631 372234217 1711017367 1213111313203