Search a number
-
+
213112400343421 = 17113110938261501
BaseRepresentation
bin110000011101001100011000…
…111010110111000101111101
31000221120100100121012122101011
4300131030120322313011331
5210413113143441442141
62033130252443315221
762613601643253355
oct6035143072670575
91027510317178334
10213112400343421
11619a450918a747
121ba9a73b81bb11
1391bb54a820237
143a8a9a393bb65
151998821411881
hexc1d318eb717d

213112400343421 has 8 divisors (see below), whose sum is σ = 227645312602104. Its totient is φ = 198801364608000.

The previous prime is 213112400343419. The next prime is 213112400343431. The reversal of 213112400343421 is 124343004211312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6539016122500 + 206573384220921 = 2557150^2 + 14372661^2 .

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 213112400343421 - 21 = 213112400343419 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 (213112400343431) 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, 55469128830 + ... + 55469132671.

It is an arithmetic number, because the mean of its divisors is an integer number (28455664075263).

Almost surely, 2213112400343421 is an apocalyptic number.

It is an amenable number.

213112400343421 is a deficient number, since it is larger than the sum of its proper divisors (14532912258683).

213112400343421 is a wasteful number, since it uses less digits than its factorization.

213112400343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110938261631.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 213112400343421 its reverse (124343004211312), we get a palindrome (337455404554733).

The spelling of 213112400343421 in words is "two hundred thirteen trillion, one hundred twelve billion, four hundred million, three hundred forty-three thousand, four hundred twenty-one".

Divisors: 1 17 113 1921 110938261501 1885950445517 12536023549613 213112400343421