Search a number
-
+
131131033 = 11109109367
BaseRepresentation
bin1111101000011…
…10011010011001
3100010202010221221
413310032122121
5232032143113
621002332041
73151411135
oct764163231
9303663857
10131131033
1168024760
1237aba021
1321223537
14135b63c5
15b7a398d
hex7d0e699

131131033 has 8 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 118115280.

The previous prime is 131131031. The next prime is 131131043. The reversal of 131131033 is 330131131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131131033 - 21 = 131131031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131130998 and 131131016.

It is not an unprimeable number, because it can be changed into a prime (131131031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53485 + ... + 55882.

It is an arithmetic number, because the mean of its divisors is an integer number (18045720).

Almost surely, 2131131033 is an apocalyptic number.

It is an amenable number.

131131033 is a deficient number, since it is larger than the sum of its proper divisors (13234727).

131131033 is a wasteful number, since it uses less digits than its factorization.

131131033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109487.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 131131033 is about 11451.2459147466. The cubic root of 131131033 is about 508.0445858009.

Adding to 131131033 its reverse (330131131), we get a palindrome (461262164).

The spelling of 131131033 in words is "one hundred thirty-one million, one hundred thirty-one thousand, thirty-three".

Divisors: 1 11 109 1199 109367 1203037 11921003 131131033