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315038213 = 73113710597
BaseRepresentation
bin10010110001110…
…001101000000101
3210221210121011222
4102301301220011
51121122210323
651132210125
710543531520
oct2261615005
9727717158
10315038213
11151915966
1289609945
1350364959
142dba9bb7
151c9ce9c8
hex12c71a05

315038213 has 16 divisors (see below), whose sum is σ = 374406144. Its totient is φ = 259390080.

The previous prime is 315038197. The next prime is 315038233. The reversal of 315038213 is 312830513.

It is a cyclic number.

It is not a de Polignac number, because 315038213 - 24 = 315038197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315038233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24431 + ... + 35027.

It is an arithmetic number, because the mean of its divisors is an integer number (23400384).

Almost surely, 2315038213 is an apocalyptic number.

It is an amenable number.

315038213 is a deficient number, since it is larger than the sum of its proper divisors (59367931).

315038213 is a wasteful number, since it uses less digits than its factorization.

315038213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 315038213 is about 17749.3158459700. The cubic root of 315038213 is about 680.4367242153.

Adding to 315038213 its reverse (312830513), we get a palindrome (627868726).

The spelling of 315038213 in words is "three hundred fifteen million, thirty-eight thousand, two hundred thirteen".

Divisors: 1 7 31 137 217 959 4247 10597 29729 74179 328507 1451789 2299549 10162523 45005459 315038213