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312101113 = 1779232391
BaseRepresentation
bin10010100110100…
…100100011111001
3210202021101020111
4102212210203321
51114344213423
650545224321
710506546532
oct2246444371
9722241214
10312101113
1115019a205
12886320a1
134c876b1c
142d643689
151c5ee60d
hex129a48f9

312101113 has 8 divisors (see below), whose sum is σ = 334644480. Its totient is φ = 290022720.

The previous prime is 312101093. The next prime is 312101159. The reversal of 312101113 is 311101213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312101113 - 29 = 312100601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312101093 and 312101102.

It is not an unprimeable number, because it can be changed into a prime (312101183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114853 + ... + 117538.

It is an arithmetic number, because the mean of its divisors is an integer number (41830560).

Almost surely, 2312101113 is an apocalyptic number.

It is an amenable number.

312101113 is a deficient number, since it is larger than the sum of its proper divisors (22543367).

312101113 is a wasteful number, since it uses less digits than its factorization.

312101113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232487.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 312101113 is about 17666.3836989917. The cubic root of 312101113 is about 678.3155489719.

Adding to 312101113 its reverse (311101213), we get a palindrome (623202326).

It can be divided in two parts, 31210 and 1113, that added together give a palindrome (32323).

The spelling of 312101113 in words is "three hundred twelve million, one hundred one thousand, one hundred thirteen".

Divisors: 1 17 79 1343 232391 3950647 18358889 312101113