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313142101 = 2549122849
BaseRepresentation
bin10010101010100…
…010101101010101
3210211020021012121
4102222202231111
51120131021401
651023415541
710521443506
oct2252425525
9724207177
10313142101
11150840328
1288a545b1
134cb4c8ac
142d834bad
151c757ca1
hex12aa2b55

313142101 has 4 divisors (see below), whose sum is σ = 313267500. Its totient is φ = 313016704.

The previous prime is 313142083. The next prime is 313142107. The reversal of 313142101 is 101241313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224970001 + 88172100 = 14999^2 + 9390^2 .

It is a cyclic number.

It is not a de Polignac number, because 313142101 - 25 = 313142069 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 (313142107) 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, 58876 + ... + 63973.

It is an arithmetic number, because the mean of its divisors is an integer number (78316875).

Almost surely, 2313142101 is an apocalyptic number.

It is an amenable number.

313142101 is a deficient number, since it is larger than the sum of its proper divisors (125399).

313142101 is a wasteful number, since it uses less digits than its factorization.

313142101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125398.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 313142101 is about 17695.8215689467. The cubic root of 313142101 is about 679.0688675835.

Adding to 313142101 its reverse (101241313), we get a palindrome (414383414).

The spelling of 313142101 in words is "three hundred thirteen million, one hundred forty-two thousand, one hundred one".

Divisors: 1 2549 122849 313142101