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315130143 = 3196019199
BaseRepresentation
bin10010110010001…
…000000100011111
3210221222021021210
4102302020010133
51121133131033
651134155503
710544363526
oct2262100437
9727867253
10315130143
11151978a39
1289652b93
1350397753
142dbd14bd
151c9ebd63
hex12c8811f

315130143 has 16 divisors (see below), whose sum is σ = 443072000. Its totient is φ = 198676800.

The previous prime is 315130133. The next prime is 315130157. The reversal of 315130143 is 341031513.

It is not a de Polignac number, because 315130143 - 25 = 315130111 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 (315130133) 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, 29658 + ... + 38856.

It is an arithmetic number, because the mean of its divisors is an integer number (27692000).

Almost surely, 2315130143 is an apocalyptic number.

315130143 is a deficient number, since it is larger than the sum of its proper divisors (127941857).

315130143 is a wasteful number, since it uses less digits than its factorization.

315130143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9822.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 315130143 is about 17751.9053343578. The cubic root of 315130143 is about 680.5029029222.

Adding to 315130143 its reverse (341031513), we get a palindrome (656161656).

The spelling of 315130143 in words is "three hundred fifteen million, one hundred thirty thousand, one hundred forty-three".

Divisors: 1 3 19 57 601 1803 9199 11419 27597 34257 174781 524343 5528599 16585797 105043381 315130143