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23030431140 = 2235383840519
BaseRepresentation
bin10101011100101110…
…000111110110100100
32012110000211010021010
4111130232013312210
5334131242244030
614325142022220
71443500302053
oct253456076644
965400733233
1023030431140
119849094872
124568a17970
132230485462
14118697039a
158ebd216b0
hex55cb87da4

23030431140 has 24 divisors (see below), whose sum is σ = 64485207360. Its totient is φ = 6141448288.

The previous prime is 23030431129. The next prime is 23030431141. The reversal of 23030431140 is 4113403032.

It is not an unprimeable number, because it can be changed into a prime (23030431141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191920200 + ... + 191920319.

It is an arithmetic number, because the mean of its divisors is an integer number (2686883640).

Almost surely, 223030431140 is an apocalyptic number.

23030431140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23030431140 is an abundant number, since it is smaller than the sum of its proper divisors (41454776220).

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

23030431140 is a wasteful number, since it uses less digits than its factorization.

23030431140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383840531 (or 383840529 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23030431140 its reverse (4113403032), we get a palindrome (27143834172).

The spelling of 23030431140 in words is "twenty-three billion, thirty million, four hundred thirty-one thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 383840519 767681038 1151521557 1535362076 1919202595 2303043114 3838405190 4606086228 5757607785 7676810380 11515215570 23030431140