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231256430060 = 22513188265813
BaseRepresentation
bin1101011101011111110…
…1010001010111101100
3211002220122202211220012
43113113331101113230
512242103121230220
6254123203512352
722464515136155
oct3272775212754
9732818684805
10231256430060
118a091253787
123899b3886b8
1318a65aa57c6
14b29b34892c
156037533ac5
hex35d7f515ec

231256430060 has 24 divisors (see below), whose sum is σ = 489345672816. Its totient is φ = 91796444480.

The previous prime is 231256430047. The next prime is 231256430099. The reversal of 231256430060 is 60034652132.

It is a junction number, because it is equal to n+sod(n) for n = 231256429999 and 231256430026.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44130287 + ... + 44135526.

It is an arithmetic number, because the mean of its divisors is an integer number (20389403034).

Almost surely, 2231256430060 is an apocalyptic number.

231256430060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231256430060 is an abundant number, since it is smaller than the sum of its proper divisors (258089242756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231256430060 is a wasteful number, since it uses less digits than its factorization.

231256430060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88265953 (or 88265951 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 231256430060 in words is "two hundred thirty-one billion, two hundred fifty-six million, four hundred thirty thousand, sixty".

Divisors: 1 2 4 5 10 20 131 262 524 655 1310 2620 88265813 176531626 353063252 441329065 882658130 1765316260 11562821503 23125643006 46251286012 57814107515 115628215030 231256430060