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31302220200213 = 315536718656407
BaseRepresentation
bin1110001111000000111011…
…01101110011100100010101
311002211110111112202001211210
413013200131231303210111
513100323421332401323
6150324012541252033
76410340124431534
oct707403555634425
9132743445661753
1031302220200213
119a7921928a556
1236166b6264019
131460a2c4bb611
147a306d75031b
15394398aab293
hex1c781db73915

31302220200213 has 8 divisors (see below), whose sum is σ = 41763168232128. Its totient is φ = 20854709484224.

The previous prime is 31302220200187. The next prime is 31302220200221. The reversal of 31302220200213 is 31200202220313.

It is a happy number.

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 31302220200213 - 216 = 31302220134677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31302220200213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302220200263) 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, 3359323545 + ... + 3359332862.

It is an arithmetic number, because the mean of its divisors is an integer number (5220396029016).

Almost surely, 231302220200213 is an apocalyptic number.

It is an amenable number.

31302220200213 is a deficient number, since it is larger than the sum of its proper divisors (10460948031915).

31302220200213 is a wasteful number, since it uses less digits than its factorization.

31302220200213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6718657963.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31302220200213 its reverse (31200202220313), we get a palindrome (62502422420526).

The spelling of 31302220200213 in words is "thirty-one trillion, three hundred two billion, two hundred twenty million, two hundred thousand, two hundred thirteen".

Divisors: 1 3 1553 4659 6718656407 20155969221 10434073400071 31302220200213