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553243131 = 3278781637
BaseRepresentation
bin100000111110011…
…101000111111011
31102120000122220100
4200332131013323
52113112240011
6130521530443
716465326510
oct4076350773
91376018810
10553243131
11264322831
12135343a23
138a8076cc
1453695307
1533883d56
hex20f9d1fb

553243131 has 12 divisors (see below), whose sum is σ = 913290352. Its totient is φ = 316138896.

The previous prime is 553243123. The next prime is 553243169. The reversal of 553243131 is 131342355.

It is not a de Polignac number, because 553243131 - 23 = 553243123 is a prime.

It is a super-2 number, since 2×5532431312 = 612155923997366322, 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 = 553243095 and 553243104.

It is not an unprimeable number, because it can be changed into a prime (553243931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4390756 + ... + 4390881.

Almost surely, 2553243131 is an apocalyptic number.

553243131 is a deficient number, since it is larger than the sum of its proper divisors (360047221).

553243131 is a wasteful number, since it uses less digits than its factorization.

553243131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8781650 (or 8781647 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 553243131 is about 23521.1209554307. The cubic root of 553243131 is about 820.9285193906.

Adding to 553243131 its reverse (131342355), we get a palindrome (684585486).

The spelling of 553243131 in words is "five hundred fifty-three million, two hundred forty-three thousand, one hundred thirty-one".

Divisors: 1 3 7 9 21 63 8781637 26344911 61471459 79034733 184414377 553243131