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312664051 = 731729432
BaseRepresentation
bin10010101000101…
…101111111110011
3210210022222110001
4102220231333303
51120020222201
651005250431
710514413000
oct2250557763
9723288401
10312664051
11150544147
1288863a17
134ca1311b
142d74c8a7
151c6b1301
hex12a2dff3

312664051 has 48 divisors (see below), whose sum is σ = 408888000. Its totient is φ = 237871872.

The previous prime is 312664043. The next prime is 312664081. The reversal of 312664051 is 150466213.

It is not a de Polignac number, because 312664051 - 23 = 312664043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312664081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7271236 + ... + 7271278.

It is an arithmetic number, because the mean of its divisors is an integer number (8518500).

Almost surely, 2312664051 is an apocalyptic number.

312664051 is a deficient number, since it is larger than the sum of its proper divisors (96223949).

312664051 is an equidigital number, since it uses as much as digits as its factorization.

312664051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 312664051 is about 17682.3089838403. The cubic root of 312664051 is about 678.7231308220.

The spelling of 312664051 in words is "three hundred twelve million, six hundred sixty-four thousand, fifty-one".

Divisors: 1 7 17 29 43 49 119 203 301 343 493 731 833 1247 1421 1849 2107 3451 5117 5831 8729 9947 12943 14749 21199 24157 31433 35819 53621 61103 90601 148393 169099 220031 250733 375347 427721 634207 911557 1038751 1540217 2627429 6380899 7271257 10781519 18392003 44666293 312664051