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23301212213 = 124211875953
BaseRepresentation
bin10101101100110111…
…000100100000110101
32020010220100020001202
4111230313010200311
5340210102242323
614412053502245
71453266015206
oct255467044065
966126306052
1023301212213
119977a21684
124623641985
1322745c2946
1411b08d95ad
159159acd28
hex56cdc4835

23301212213 has 4 divisors (see below), whose sum is σ = 23303100588. Its totient is φ = 23299323840.

The previous prime is 23301212203. The next prime is 23301212317. The reversal of 23301212213 is 31221210332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13067461969 + 10233750244 = 114313^2 + 101162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23301212213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23301212203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925556 + ... + 950397.

It is an arithmetic number, because the mean of its divisors is an integer number (5825775147).

Almost surely, 223301212213 is an apocalyptic number.

It is an amenable number.

23301212213 is a deficient number, since it is larger than the sum of its proper divisors (1888375).

23301212213 is a wasteful number, since it uses less digits than its factorization.

23301212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888374.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23301212213 its reverse (31221210332), we get a palindrome (54522422545).

The spelling of 23301212213 in words is "twenty-three billion, three hundred one million, two hundred twelve thousand, two hundred thirteen".

Divisors: 1 12421 1875953 23301212213