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431240012 = 22753290593
BaseRepresentation
bin11001101101000…
…011001101001100
31010001110021002022
4121231003031030
51340344140022
6110442545312
713454323340
oct3155031514
91101407068
10431240012
11201473005
12100508238
136b45bb08
14413b7620
1527cd4c42
hex19b4334c

431240012 has 24 divisors (see below), whose sum is σ = 878756256. Its totient is φ = 181329408.

The previous prime is 431240011. The next prime is 431240023. The reversal of 431240012 is 210042134.

It is not an unprimeable number, because it can be changed into a prime (431240011) 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, 143813 + ... + 146780.

It is an arithmetic number, because the mean of its divisors is an integer number (36614844).

Almost surely, 2431240012 is an apocalyptic number.

It is an amenable number.

431240012 is an abundant number, since it is smaller than the sum of its proper divisors (447516244).

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

431240012 is a wasteful number, since it uses less digits than its factorization.

431240012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290657 (or 290655 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 431240012 is about 20766.3191731226. The cubic root of 431240012 is about 755.5090711726.

Adding to 431240012 its reverse (210042134), we get a palindrome (641282146).

The spelling of 431240012 in words is "four hundred thirty-one million, two hundred forty thousand, twelve".

Divisors: 1 2 4 7 14 28 53 106 212 371 742 1484 290593 581186 1162372 2034151 4068302 8136604 15401429 30802858 61605716 107810003 215620006 431240012