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312212041 = 345790313
BaseRepresentation
bin10010100110111…
…111101001001001
3210202111000101221
4102212333221021
51114411241131
650551442041
710510521121
oct2246775111
9722430357
10312212041
11150265589
1288686321
134c8b546b
142d671c81
151c622411
hex129bfa49

312212041 has 4 divisors (see below), whose sum is σ = 312305812. Its totient is φ = 312118272.

The previous prime is 312212003. The next prime is 312212077. The reversal of 312212041 is 140212213.

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 1218816 + 310993225 = 1104^2 + 17635^2 .

It is a cyclic number.

It is not a de Polignac number, because 312212041 - 211 = 312209993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312212141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41700 + ... + 48613.

It is an arithmetic number, because the mean of its divisors is an integer number (78076453).

Almost surely, 2312212041 is an apocalyptic number.

It is an amenable number.

312212041 is a deficient number, since it is larger than the sum of its proper divisors (93771).

312212041 is an equidigital number, since it uses as much as digits as its factorization.

312212041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93770.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 312212041 is about 17669.5229420604. The cubic root of 312212041 is about 678.3959024977.

Adding to 312212041 its reverse (140212213), we get a palindrome (452424254).

The spelling of 312212041 in words is "three hundred twelve million, two hundred twelve thousand, forty-one".

Divisors: 1 3457 90313 312212041