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312201142 = 21141893889
BaseRepresentation
bin10010100110111…
…100111110110110
3210202110110110021
4102212330332312
51114410414032
650551315354
710510444261
oct2246747666
9722413407
10312201142
11150258380
128867bb5a
134c8b0506
142d66bcd8
151c61e097
hex129bcfb6

312201142 has 32 divisors (see below), whose sum is σ = 529351200. Its totient is φ = 136857600.

The previous prime is 312201139. The next prime is 312201157. The reversal of 312201142 is 241102213.

It is a super-2 number, since 2×3122011422 = 194939106132208328, which contains 22 as substring.

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, 78334 + ... + 82222.

It is an arithmetic number, because the mean of its divisors is an integer number (16542225).

Almost surely, 2312201142 is an apocalyptic number.

312201142 is a deficient number, since it is larger than the sum of its proper divisors (217150058).

312201142 is a wasteful number, since it uses less digits than its factorization.

312201142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 312201142 is about 17669.2145269675. The cubic root of 312201142 is about 678.3880083723.

Adding to 312201142 its reverse (241102213), we get a palindrome (553303355).

The spelling of 312201142 in words is "three hundred twelve million, two hundred one thousand, one hundred forty-two".

Divisors: 1 2 11 22 41 82 89 178 451 902 979 1958 3649 3889 7298 7778 40139 42779 80278 85558 159449 318898 346121 692242 1753939 3507878 3807331 7614662 14190961 28381922 156100571 312201142