Search a number
-
+
131203311001 = 731941642533
BaseRepresentation
bin111101000110001010…
…0111010010110011001
3110112122210011202222221
41322030110322112121
54122201021423001
6140135102144041
712323224512460
oct1721424722631
9415583152887
10131203311001
1150708937534
1221517882021
13c4ac288089
1464c921b9d7
15362d8051a1
hex1e8c53a599

131203311001 has 16 divisors (see below), whose sum is σ = 154948359168. Its totient is φ = 108716414400.

The previous prime is 131203310977. The next prime is 131203311091. The reversal of 131203311001 is 100113302131.

It is a cyclic number.

It is not a de Polignac number, because 131203311001 - 25 = 131203310969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131203311091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117070 + ... + 525463.

It is an arithmetic number, because the mean of its divisors is an integer number (9684272448).

Almost surely, 2131203311001 is an apocalyptic number.

It is an amenable number.

131203311001 is a deficient number, since it is larger than the sum of its proper divisors (23745048167).

131203311001 is an equidigital number, since it uses as much as digits as its factorization.

131203311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643512.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 131203311001 its reverse (100113302131), we get a palindrome (231316613132).

The spelling of 131203311001 in words is "one hundred thirty-one billion, two hundred three million, three hundred eleven thousand, one".

Divisors: 1 7 31 217 941 6587 29171 204197 642533 4497731 19918523 139429661 604623553 4232364871 18743330143 131203311001