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312132141 = 3243806543
BaseRepresentation
bin10010100110101…
…100001000101101
3210202022221210200
4102212230020231
51114401212031
650550024113
710510036146
oct2246541055
9722287720
10312132141
11150210552
1288648039
134c887c99
142d650acd
151c6088e6
hex129ac22d

312132141 has 12 divisors (see below), whose sum is σ = 461343168. Its totient is φ = 203248584.

The previous prime is 312132101. The next prime is 312132143. The reversal of 312132141 is 141231213.

It is not a de Polignac number, because 312132141 - 26 = 312132077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312132143) 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 11 ways as a sum of consecutive naturals, for example, 402885 + ... + 403658.

It is an arithmetic number, because the mean of its divisors is an integer number (38445264).

Almost surely, 2312132141 is an apocalyptic number.

It is an amenable number.

312132141 is a deficient number, since it is larger than the sum of its proper divisors (149211027).

312132141 is a wasteful number, since it uses less digits than its factorization.

312132141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806592 (or 806589 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 312132141 is about 17667.2618421758. The cubic root of 312132141 is about 678.3380268128.

Adding to 312132141 its reverse (141231213), we get a palindrome (453363354).

The spelling of 312132141 in words is "three hundred twelve million, one hundred thirty-two thousand, one hundred forty-one".

Divisors: 1 3 9 43 129 387 806543 2419629 7258887 34681349 104044047 312132141