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315879245 = 51147891373
BaseRepresentation
bin10010110100111…
…110111101001101
3211000101022212022
4102310332331031
51121331113440
651202215525
710553633513
oct2264767515
9730338768
10315879245
1115233a830
12899545a5
135059a6c6
142dd484b3
151cae8cb5
hex12d3ef4d

315879245 has 32 divisors (see below), whose sum is σ = 427368960. Its totient is φ = 222154240.

The previous prime is 315879197. The next prime is 315879251. The reversal of 315879245 is 542978513.

It is not a de Polignac number, because 315879245 - 210 = 315878221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315879196 and 315879205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229379 + ... + 230751.

It is an arithmetic number, because the mean of its divisors is an integer number (13355280).

Almost surely, 2315879245 is an apocalyptic number.

It is an amenable number.

315879245 is a deficient number, since it is larger than the sum of its proper divisors (111489715).

315879245 is a wasteful number, since it uses less digits than its factorization.

315879245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525.

The product of its digits is 302400, while the sum is 44.

The square root of 315879245 is about 17772.9920103510. The cubic root of 315879245 is about 681.0416884626.

The spelling of 315879245 in words is "three hundred fifteen million, eight hundred seventy-nine thousand, two hundred forty-five".

Divisors: 1 5 11 47 55 89 235 445 517 979 1373 2585 4183 4895 6865 15103 20915 46013 64531 75515 122197 230065 322655 610985 709841 1344167 3549205 5743259 6720835 28716295 63175849 315879245