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312141023 = 1931617311
BaseRepresentation
bin10010100110101…
…110010011011111
3210202100101222122
4102212232103133
51114402003043
650550133155
710510104065
oct2246562337
9722311878
10312141023
11150217197
12886511bb
134c88c03c
142d654035
151c60b368
hex129ae4df

312141023 has 4 divisors (see below), whose sum is σ = 313758528. Its totient is φ = 310523520.

The previous prime is 312141017. The next prime is 312141043. The reversal of 312141023 is 320141213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312141023 - 216 = 312075487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312140992 and 312141010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312141043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808463 + ... + 808848.

It is an arithmetic number, because the mean of its divisors is an integer number (78439632).

Almost surely, 2312141023 is an apocalyptic number.

312141023 is a deficient number, since it is larger than the sum of its proper divisors (1617505).

312141023 is a wasteful number, since it uses less digits than its factorization.

312141023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617504.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312141023 is about 17667.5132092776. The cubic root of 312141023 is about 678.3444609907.

Adding to 312141023 its reverse (320141213), we get a palindrome (632282236).

It can be divided in two parts, 3121 and 41023, that added together give a palindrome (44144).

The spelling of 312141023 in words is "three hundred twelve million, one hundred forty-one thousand, twenty-three".

Divisors: 1 193 1617311 312141023