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13215430510 = 253142630421
BaseRepresentation
bin11000100111011001…
…10111011101101110
31021010000011102120021
430103230313131232
5204031122234020
610023204312354
7645330206632
oct142354673556
937100142507
1013215430510
1156718475a7
1226899a26ba
131327bcc589
148d5206dc2
155253081aa
hex313b3776e

13215430510 has 16 divisors (see below), whose sum is σ = 24555123072. Its totient is φ = 5115650400.

The previous prime is 13215430483. The next prime is 13215430511. The reversal of 13215430510 is 1503451231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215430511) 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, 21314901 + ... + 21315520.

It is an arithmetic number, because the mean of its divisors is an integer number (1534695192).

Almost surely, 213215430510 is an apocalyptic number.

13215430510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13215430510 is a deficient number, since it is larger than the sum of its proper divisors (11339692562).

13215430510 is a wasteful number, since it uses less digits than its factorization.

13215430510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42630459.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13215430510 its reverse (1503451231), we get a palindrome (14718881741).

The spelling of 13215430510 in words is "thirteen billion, two hundred fifteen million, four hundred thirty thousand, five hundred ten".

Divisors: 1 2 5 10 31 62 155 310 42630421 85260842 213152105 426304210 1321543051 2643086102 6607715255 13215430510