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118702013 = 170969457
BaseRepresentation
bin1110001001100…
…11111110111101
322021100200112212
413010303332331
5220341431023
615440110205
72640644003
oct704637675
9267320485
10118702013
1161005641
1233905365
131b7911a1
1411a9ca73
15a64ae78
hex7133fbd

118702013 has 4 divisors (see below), whose sum is σ = 118773180. Its totient is φ = 118630848.

The previous prime is 118701991. The next prime is 118702027. The reversal of 118702013 is 310207811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310207811 = 415774623.

It can be written as a sum of positive squares in 2 ways, for example, as 17960644 + 100741369 = 4238^2 + 10037^2 .

It is a cyclic number.

It is not a de Polignac number, because 118702013 - 28 = 118701757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118702013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118702043) 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, 33020 + ... + 36437.

It is an arithmetic number, because the mean of its divisors is an integer number (29693295).

Almost surely, 2118702013 is an apocalyptic number.

It is an amenable number.

118702013 is a deficient number, since it is larger than the sum of its proper divisors (71167).

118702013 is an equidigital number, since it uses as much as digits as its factorization.

118702013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71166.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 118702013 is about 10895.0453418056. The cubic root of 118702013 is about 491.4575688990.

Adding to 118702013 its reverse (310207811), we get a palindrome (428909824).

The spelling of 118702013 in words is "one hundred eighteen million, seven hundred two thousand, thirteen".

Divisors: 1 1709 69457 118702013