Search a number
-
+
131413420 = 22512015471
BaseRepresentation
bin1111101010100…
…11010110101100
3100011021111022201
413311103112230
5232120212140
621012351244
73153665335
oct765232654
9304244281
10131413420
11681a7936
1238015524
13212c1c28
141364b28c
15b80c49a
hex7d535ac

131413420 has 24 divisors (see below), whose sum is σ = 276248448. Its totient is φ = 52512000.

The previous prime is 131413391. The next prime is 131413439. The reversal of 131413420 is 24314131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21285 + ... + 26755.

It is an arithmetic number, because the mean of its divisors is an integer number (11510352).

Almost surely, 2131413420 is an apocalyptic number.

131413420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131413420 is an abundant number, since it is smaller than the sum of its proper divisors (144835028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131413420 is a wasteful number, since it uses less digits than its factorization.

131413420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6679 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 131413420 is about 11463.5692522006. The cubic root of 131413420 is about 508.4090109194.

Adding to 131413420 its reverse (24314131), we get a palindrome (155727551).

It can be divided in two parts, 13141 and 3420, that added together give a palindrome (16561).

The spelling of 131413420 in words is "one hundred thirty-one million, four hundred thirteen thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1201 2402 4804 5471 6005 10942 12010 21884 24020 27355 54710 109420 6570671 13141342 26282684 32853355 65706710 131413420