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313012933 = 378459809
BaseRepresentation
bin10010101010000…
…011001011000101
3210210222201000121
4102222003023011
51120112403213
651020541541
710520365102
oct2252031305
9723881017
10313012933
11150762282
12889b18b1
134cb05b6c
142d7ddaa9
151c72e88d
hex12a832c5

313012933 has 4 divisors (see below), whose sum is σ = 321472780. Its totient is φ = 304553088.

The previous prime is 313012927. The next prime is 313012949. The reversal of 313012933 is 339210313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 339210313 = 1326093101.

It can be written as a sum of positive squares in 2 ways, for example, as 297148644 + 15864289 = 17238^2 + 3983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-313012933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313012898 and 313012907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313012333) 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, 4229868 + ... + 4229941.

It is an arithmetic number, because the mean of its divisors is an integer number (80368195).

Almost surely, 2313012933 is an apocalyptic number.

It is an amenable number.

313012933 is a deficient number, since it is larger than the sum of its proper divisors (8459847).

313012933 is an equidigital number, since it uses as much as digits as its factorization.

313012933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8459846.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 313012933 is about 17692.1715173689. The cubic root of 313012933 is about 678.9754850261.

The spelling of 313012933 in words is "three hundred thirteen million, twelve thousand, nine hundred thirty-three".

Divisors: 1 37 8459809 313012933