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313780047 = 3731481997
BaseRepresentation
bin10010101100111…
…110011101001111
3210212102200022020
4102230332131033
51120311430142
651045221223
710530041430
oct2254763517
9725380266
10313780047
11151136659
1289101813
1350014089
142d95d487
151c831cec
hex12b3e74f

313780047 has 16 divisors (see below), whose sum is σ = 493565952. Its totient is φ = 173518560.

The previous prime is 313780039. The next prime is 313780063. The reversal of 313780047 is 740087313.

It is not a de Polignac number, because 313780047 - 23 = 313780039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313780147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240348 + ... + 241649.

It is an arithmetic number, because the mean of its divisors is an integer number (30847872).

Almost surely, 2313780047 is an apocalyptic number.

313780047 is a deficient number, since it is larger than the sum of its proper divisors (179785905).

313780047 is a wasteful number, since it uses less digits than its factorization.

313780047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482038.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 313780047 is about 17713.8377264781. The cubic root of 313780047 is about 679.5296971504.

The spelling of 313780047 in words is "three hundred thirteen million, seven hundred eighty thousand, forty-seven".

Divisors: 1 3 7 21 31 93 217 651 481997 1445991 3373979 10121937 14941907 44825721 104593349 313780047