Base | Representation |
---|---|
bin | 10011010001011000101 |
3 | 1012002020122 |
4 | 2122023011 |
5 | 130201433 |
6 | 21311325 |
7 | 5240042 |
oct | 2321305 |
9 | 1162218 |
10 | 631493 |
11 | 3a14a5 |
12 | 265545 |
13 | 191585 |
14 | 1261c9 |
15 | c7198 |
hex | 9a2c5 |
631493 has 4 divisors (see below), whose sum is σ = 637728. Its totient is φ = 625260.
The previous prime is 631487. The next prime is 631507. The reversal of 631493 is 394136.
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 631493 - 26 = 631429 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 (631453) 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, 2963 + ... + 3168.
It is an arithmetic number, because the mean of its divisors is an integer number (159432).
2631493 is an apocalyptic number.
It is an amenable number.
631493 is a deficient number, since it is larger than the sum of its proper divisors (6235).
631493 is a wasteful number, since it uses less digits than its factorization.
631493 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6234.
The product of its digits is 1944, while the sum is 26.
The square root of 631493 is about 794.6653383658. The cubic root of 631493 is about 85.7938545523.
The spelling of 631493 in words is "six hundred thirty-one thousand, four hundred ninety-three".
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