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631340430 = 23573006383
BaseRepresentation
bin100101101000010…
…111110110001110
31121222222102020220
4211220113312032
52243110343210
6142351452210
721434206440
oct4550276616
91558872226
10631340430
112a4414456
12157527066
13a0a4ca26
145dbc4490
153a65dc70
hex25a17d8e

631340430 has 32 divisors (see below), whose sum is σ = 1731677184. Its totient is φ = 144306336.

The previous prime is 631340419. The next prime is 631340447. The reversal of 631340430 is 34043136.

It is a self number, because there is not a number n which added to its sum of digits gives 631340430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502982 + ... + 1503401.

It is an arithmetic number, because the mean of its divisors is an integer number (54114912).

Almost surely, 2631340430 is an apocalyptic number.

631340430 is an abundant number, since it is smaller than the sum of its proper divisors (1100336754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631340430 is a wasteful number, since it uses less digits than its factorization.

631340430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006400.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 631340430 is about 25126.4886126176. The cubic root of 631340430 is about 857.8694467223.

Adding to 631340430 its reverse (34043136), we get a palindrome (665383566).

The spelling of 631340430 in words is "six hundred thirty-one million, three hundred forty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 3006383 6012766 9019149 15031915 18038298 21044681 30063830 42089362 45095745 63134043 90191490 105223405 126268086 210446810 315670215 631340430