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312313141 = 744616163
BaseRepresentation
bin10010100111011…
…000010100110101
3210202200011002101
4102213120110311
51114423010031
650553542101
710511421640
oct2247302465
9722604071
10312313141
11150324538
1288714931
134c91c49a
142d69aa57
151c642361
hex129d8535

312313141 has 4 divisors (see below), whose sum is σ = 356929312. Its totient is φ = 267696972.

The previous prime is 312313121. The next prime is 312313181. The reversal of 312313141 is 141313213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312313141 - 211 = 312311093 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 (312313121) 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, 22308075 + ... + 22308088.

It is an arithmetic number, because the mean of its divisors is an integer number (89232328).

Almost surely, 2312313141 is an apocalyptic number.

It is an amenable number.

312313141 is a deficient number, since it is larger than the sum of its proper divisors (44616171).

312313141 is an equidigital number, since it uses as much as digits as its factorization.

312313141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44616170.

The product of its digits is 216, while the sum is 19.

The square root of 312313141 is about 17672.3835687210. The cubic root of 312313141 is about 678.4691202845.

Adding to 312313141 its reverse (141313213), we get a palindrome (453626354).

The spelling of 312313141 in words is "three hundred twelve million, three hundred thirteen thousand, one hundred forty-one".

Divisors: 1 7 44616163 312313141