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20120031302 = 271437145093
BaseRepresentation
bin10010101111001111…
…110101000001000110
31220221012101111020112
4102233033311001012
5312201212000202
613124254033022
71311410305250
oct225717650106
956835344215
1020120031302
118595262348
123a961a8772
131b88512b87
14d8c20ccd0
157cb57ab52
hex4af3f5046

20120031302 has 8 divisors (see below), whose sum is σ = 34491482256. Its totient is φ = 8622870552.

The previous prime is 20120031293. The next prime is 20120031317. The reversal of 20120031302 is 20313002102.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1437145093 = 20120031302 / (2 + 0 + 1 + 2 + 0 + 0 + 3 + 1 + 3 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718572533 + ... + 718572560.

It is an arithmetic number, because the mean of its divisors is an integer number (4311435282).

Almost surely, 220120031302 is an apocalyptic number.

20120031302 is a deficient number, since it is larger than the sum of its proper divisors (14371450954).

20120031302 is a wasteful number, since it uses less digits than its factorization.

20120031302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437145102.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20120031302 its reverse (20313002102), we get a palindrome (40433033404).

The spelling of 20120031302 in words is "twenty billion, one hundred twenty million, thirty-one thousand, three hundred two".

Divisors: 1 2 7 14 1437145093 2874290186 10060015651 20120031302