Search a number
405143213 = 19121317579
BaseRepresentation
bin11000001001011…
…111111010101101
31001020100102000012
4120021133322231
51312204040323
6104111343005
713016442356
oct3011377255
91036312005
10405143213
11198769102
12b3821a65
1365c22617
143bb42d2d
152587c678

405143213 has 8 divisors (see below), whose sum is σ = 426842400. Its totient is φ = 383481648.

The previous prime is 405143197. The next prime is 405143227. The reversal of 405143213 is 312341504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405143213 - 24 = 405143197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405143293) 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 7 ways as a sum of consecutive naturals, for example, 14258 + ... + 31836.

It is an arithmetic number, because the mean of its divisors is an integer number (53355300).

Almost surely, 2405143213 is an apocalyptic number.

It is an amenable number.

405143213 is a deficient number, since it is larger than the sum of its proper divisors (21699187).

405143213 is a wasteful number, since it uses less digits than its factorization.

405143213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18811.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 405143213 is about 20128.1696385936. The cubic root of 405143213 is about 739.9508203255.

Adding to 405143213 its reverse (312341504), we get a palindrome (717484717).

The spelling of 405143213 in words is "four hundred five million, one hundred forty-three thousand, two hundred thirteen".