Search a number
-
+
131423032 = 23135932131
BaseRepresentation
bin1111101010101…
…01101100111000
3100011021222111201
413311111230320
5232121014112
621012503544
73154035346
oct765255470
9304258451
10131423032
1168204084
123801abb4
13212c6410
1413650996
15b810257
hex7d55b38

131423032 has 32 divisors (see below), whose sum is σ = 265945680. Its totient is φ = 60526080.

The previous prime is 131423027. The next prime is 131423051. The reversal of 131423032 is 230324131.

It is a congruent number.

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, 60607 + ... + 62737.

Almost surely, 2131423032 is an apocalyptic number.

It is an amenable number.

131423032 is an abundant number, since it is smaller than the sum of its proper divisors (134522648).

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

131423032 is a wasteful number, since it uses less digits than its factorization.

131423032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2739 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131423032 is about 11463.9884856886. The cubic root of 131423032 is about 508.4214061737.

Adding to 131423032 its reverse (230324131), we get a palindrome (361747163).

The spelling of 131423032 in words is "one hundred thirty-one million, four hundred twenty-three thousand, thirty-two".

Divisors: 1 2 4 8 13 26 52 104 593 1186 2131 2372 4262 4744 7709 8524 15418 17048 27703 30836 55406 61672 110812 221624 1263683 2527366 5054732 10109464 16427879 32855758 65711516 131423032