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312113230 = 2511131012161
BaseRepresentation
bin10010100110100…
…111100001001110
3210202021222212021
4102212213201032
51114400110410
650545400354
710506630052
oct2246474116
9722258767
10312113230
111501a8320
12886390ba
134c87c4b0
142d647c62
151c602eda
hex129a784e

312113230 has 64 divisors (see below), whose sum is σ = 666864576. Its totient is φ = 103680000.

The previous prime is 312113189. The next prime is 312113267. The reversal of 312113230 is 32311213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143350 + ... + 145510.

It is an arithmetic number, because the mean of its divisors is an integer number (10419759).

Almost surely, 2312113230 is an apocalyptic number.

312113230 is an abundant number, since it is smaller than the sum of its proper divisors (354751346).

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

312113230 is a wasteful number, since it uses less digits than its factorization.

312113230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 312113230 is about 17666.7266351183. The cubic root of 312113230 is about 678.3243271561.

Adding to 312113230 its reverse (32311213), we get a palindrome (344424443).

The spelling of 312113230 in words is "three hundred twelve million, one hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 5 10 11 13 22 26 55 65 101 110 130 143 202 286 505 715 1010 1111 1313 1430 2161 2222 2626 4322 5555 6565 10805 11110 13130 14443 21610 23771 28093 28886 47542 56186 72215 118855 140465 144430 218261 237710 280930 309023 436522 618046 1091305 1545115 2182610 2400871 2837393 3090230 4801742 5674786 12004355 14186965 24008710 28373930 31211323 62422646 156056615 312113230