Search a number
-
+
131330101 = 718761443
BaseRepresentation
bin1111101001111…
…11000000110101
3100011010021000211
413310333000311
5232110030401
621010505421
73153200410
oct764770065
9304107024
10131330101
1168150281
1237b95271
1321293026
1413628b77
15b7e2951
hex7d3f035

131330101 has 4 divisors (see below), whose sum is σ = 150091552. Its totient is φ = 112568652.

The previous prime is 131330099. The next prime is 131330113. The reversal of 131330101 is 101033131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131330101 - 21 = 131330099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131330201) 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, 9380715 + ... + 9380728.

It is an arithmetic number, because the mean of its divisors is an integer number (37522888).

Almost surely, 2131330101 is an apocalyptic number.

It is an amenable number.

131330101 is a deficient number, since it is larger than the sum of its proper divisors (18761451).

131330101 is an equidigital number, since it uses as much as digits as its factorization.

131330101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761450.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 131330101 is about 11459.9345984172. The cubic root of 131330101 is about 508.3015407033.

Adding to 131330101 its reverse (101033131), we get a palindrome (232363232).

The spelling of 131330101 in words is "one hundred thirty-one million, three hundred thirty thousand, one hundred one".

Divisors: 1 7 18761443 131330101