Search a number
-
+
131481348 = 22310956779
BaseRepresentation
bin1111101011000…
…11111100000100
3100011101221111120
413311203330010
5232124400343
621014033540
73154400355
oct765437404
9304357446
10131481348
1168243979
12380488b0
1321316b1b
1413667d2c
15b822683
hex7d63f04

131481348 has 12 divisors (see below), whose sum is σ = 306789840. Its totient is φ = 43827112.

The previous prime is 131481347. The next prime is 131481353. The reversal of 131481348 is 843184131.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (131481347) 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, 5478378 + ... + 5478401.

It is an arithmetic number, because the mean of its divisors is an integer number (25565820).

Almost surely, 2131481348 is an apocalyptic number.

It is an amenable number.

131481348 is an abundant number, since it is smaller than the sum of its proper divisors (175308492).

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

131481348 is a wasteful number, since it uses less digits than its factorization.

131481348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10956786 (or 10956784 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 131481348 is about 11466.5316464919. The cubic root of 131481348 is about 508.4965952228.

The spelling of 131481348 in words is "one hundred thirty-one million, four hundred eighty-one thousand, three hundred forty-eight".

Divisors: 1 2 3 4 6 12 10956779 21913558 32870337 43827116 65740674 131481348