Search a number
-
+
131234444 = 221119156979
BaseRepresentation
bin1111101001001…
…11101010001100
3100010221101210222
413310213222030
5232044000234
621004450512
73152321465
oct764475214
9303841728
10131234444
1168095420
1237b49a38
132125b623
1413601d6c
15b7c442e
hex7d27a8c

131234444 has 24 divisors (see below), whose sum is σ = 263726400. Its totient is φ = 56512080.

The previous prime is 131234443. The next prime is 131234447. The reversal of 131234444 is 444432131.

131234444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131234443) 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, 77654 + ... + 79325.

It is an arithmetic number, because the mean of its divisors is an integer number (10988600).

Almost surely, 2131234444 is an apocalyptic number.

It is an amenable number.

131234444 is an abundant number, since it is smaller than the sum of its proper divisors (132491956).

131234444 is a wasteful number, since it uses less digits than its factorization.

131234444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157013 (or 157011 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 131234444 is about 11455.7602977716. The cubic root of 131234444 is about 508.1781000755.

Adding to 131234444 its reverse (444432131), we get a palindrome (575666575).

The spelling of 131234444 in words is "one hundred thirty-one million, two hundred thirty-four thousand, four hundred forty-four".

Divisors: 1 2 4 11 19 22 38 44 76 209 418 836 156979 313958 627916 1726769 2982601 3453538 5965202 6907076 11930404 32808611 65617222 131234444