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315014231 = 745002033
BaseRepresentation
bin10010110001101…
…011110001010111
3210221202101021202
4102301223301113
51121120423411
651131503115
710543401560
oct2261536127
9727671252
10315014231
111518a9944
12895b7a9b
1350356a6c
142dba1167
151c9c783b
hex12c6bc57

315014231 has 4 divisors (see below), whose sum is σ = 360016272. Its totient is φ = 270012192.

The previous prime is 315014221. The next prime is 315014239. The reversal of 315014231 is 132410513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132410513 = 528125073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-315014231 is a prime.

It is a super-2 number, since 2×3150142312 = 198467931465042722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315014239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22501010 + ... + 22501023.

It is an arithmetic number, because the mean of its divisors is an integer number (90004068).

Almost surely, 2315014231 is an apocalyptic number.

315014231 is a deficient number, since it is larger than the sum of its proper divisors (45002041).

315014231 is an equidigital number, since it uses as much as digits as its factorization.

315014231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45002040.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 315014231 is about 17748.6402577775. The cubic root of 315014231 is about 680.4194578998.

Adding to 315014231 its reverse (132410513), we get a palindrome (447424744).

The spelling of 315014231 in words is "three hundred fifteen million, fourteen thousand, two hundred thirty-one".

Divisors: 1 7 45002033 315014231