Search a number
-
+
131230458345 = 3576431943723
BaseRepresentation
bin111101000110111110…
…0011110000111101001
3110112201200021000011010
41322031330132013221
54122224444131340
6140141512054133
712324004330320
oct1721574360751
9415650230133
10131230458345
1150722199758
1221524994349
13c4b4aa17ac
1464cca870b7
153630db8b80
hex1e8df1e1e9

131230458345 has 32 divisors (see below), whose sum is σ = 240337585152. Its totient is φ = 59897737152.

The previous prime is 131230458311. The next prime is 131230458347. The reversal of 131230458345 is 543854032131.

It is not a de Polignac number, because 131230458345 - 210 = 131230457321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131230458347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904347 + ... + 1039376.

It is an arithmetic number, because the mean of its divisors is an integer number (7510549536).

Almost surely, 2131230458345 is an apocalyptic number.

131230458345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131230458345 is a deficient number, since it is larger than the sum of its proper divisors (109107126807).

131230458345 is a wasteful number, since it uses less digits than its factorization.

131230458345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944381.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 131230458345 in words is "one hundred thirty-one billion, two hundred thirty million, four hundred fifty-eight thousand, three hundred forty-five".

Divisors: 1 3 5 7 15 21 35 105 643 1929 3215 4501 9645 13503 22505 67515 1943723 5831169 9718615 13606061 29155845 40818183 68030305 204090915 1249813889 3749441667 6249069445 8748697223 18747208335 26246091669 43743486115 131230458345