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131230033 = 1114098467
BaseRepresentation
bin1111101001001…
…10100101010001
3100010221011202121
413310212211101
5232043330113
621004414241
73152302564
oct764464521
9303834677
10131230033
1168092080
1237b47381
132125960c
14136004db
15b7c2e8d
hex7d26951

131230033 has 8 divisors (see below), whose sum is σ = 143278560. Its totient is φ = 119201280.

The previous prime is 131230003. The next prime is 131230049. The reversal of 131230033 is 330032131.

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

It is not a de Polignac number, because 131230033 - 221 = 129132881 is a prime.

It is a super-2 number, since 2×1312300332 = 34442643122362178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131229989 and 131230016.

It is not an unprimeable number, because it can be changed into a prime (131230003) 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, 11266 + ... + 19732.

It is an arithmetic number, because the mean of its divisors is an integer number (17909820).

Almost surely, 2131230033 is an apocalyptic number.

It is an amenable number.

131230033 is a deficient number, since it is larger than the sum of its proper divisors (12048527).

131230033 is a wasteful number, since it uses less digits than its factorization.

131230033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 131230033 is about 11455.5677729216. The cubic root of 131230033 is about 508.1724064515.

Adding to 131230033 its reverse (330032131), we get a palindrome (461262164).

The spelling of 131230033 in words is "one hundred thirty-one million, two hundred thirty thousand, thirty-three".

Divisors: 1 11 1409 8467 15499 93137 11930003 131230033