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313130203 = 1916480537
BaseRepresentation
bin10010101010011…
…111110011011011
3210211012122212221
4102222133303123
51120130131303
651023244511
710521364021
oct2252376333
9724178787
10313130203
111508323a1
1288a49737
134cb47359
142d830711
151c7544bd
hex12a9fcdb

313130203 has 4 divisors (see below), whose sum is σ = 329610760. Its totient is φ = 296649648.

The previous prime is 313130189. The next prime is 313130227. The reversal of 313130203 is 302031313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302031313 = 614951333.

It is a cyclic number.

It is not a de Polignac number, because 313130203 - 225 = 279575771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313130273) 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, 8240250 + ... + 8240287.

It is an arithmetic number, because the mean of its divisors is an integer number (82402690).

Almost surely, 2313130203 is an apocalyptic number.

313130203 is a deficient number, since it is larger than the sum of its proper divisors (16480557).

313130203 is a wasteful number, since it uses less digits than its factorization.

313130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16480556.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 313130203 is about 17695.4853846963. The cubic root of 313130203 is about 679.0602669475.

Adding to 313130203 its reverse (302031313), we get a palindrome (615161516).

The spelling of 313130203 in words is "three hundred thirteen million, one hundred thirty thousand, two hundred three".

Divisors: 1 19 16480537 313130203