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631468130 = 251271573167
BaseRepresentation
bin100101101000110…
…111000001100010
31122000012220102112
4211220313001202
52243123440010
6142354315322
721435250646
oct4550670142
91560186375
10631468130
112a44a1397
12157588b42
13a0a95ba7
145dc18c26
153a686a05
hex25a37062

631468130 has 32 divisors (see below), whose sum is σ = 1153253376. Its totient is φ = 248923584.

The previous prime is 631468087. The next prime is 631468133. The reversal of 631468130 is 31864136.

It is not an unprimeable number, because it can be changed into a prime (631468133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197807 + ... + 200973.

It is an arithmetic number, because the mean of its divisors is an integer number (36039168).

Almost surely, 2631468130 is an apocalyptic number.

631468130 is a deficient number, since it is larger than the sum of its proper divisors (521785246).

631468130 is a wasteful number, since it uses less digits than its factorization.

631468130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 631468130 is about 25129.0296271066. The cubic root of 631468130 is about 857.9272826841.

The spelling of 631468130 in words is "six hundred thirty-one million, four hundred sixty-eight thousand, one hundred thirty".

Divisors: 1 2 5 10 127 157 254 314 635 785 1270 1570 3167 6334 15835 19939 31670 39878 99695 199390 402209 497219 804418 994438 2011045 2486095 4022090 4972190 63146813 126293626 315734065 631468130