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12020130331 = 111373795877
BaseRepresentation
bin10110011000111010…
…01010001000011011
31011000200222212222021
423030131022020123
5144104123132311
65304425035311
7603604264516
oct131435121033
934020885867
1012020130331
115109060910
1223b5625b37
131197392371
1482057bd7d
154a53ea171
hex2cc74a21b

12020130331 has 8 divisors (see below), whose sum is σ = 13122436464. Its totient is φ = 10919418720.

The previous prime is 12020130329. The next prime is 12020130359. The reversal of 12020130331 is 13303102021.

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

It is a cyclic number.

It is not a de Polignac number, because 12020130331 - 21 = 12020130329 is a prime.

It is a super-2 number, since 2×120201303312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020130391) 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, 382836 + ... + 413041.

It is an arithmetic number, because the mean of its divisors is an integer number (1640304558).

Almost surely, 212020130331 is an apocalyptic number.

12020130331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12020130331 is a deficient number, since it is larger than the sum of its proper divisors (1102306133).

12020130331 is a wasteful number, since it uses less digits than its factorization.

12020130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797261.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12020130331 its reverse (13303102021), we get a palindrome (25323232352).

The spelling of 12020130331 in words is "twelve billion, twenty million, one hundred thirty thousand, three hundred thirty-one".

Divisors: 1 11 1373 15103 795877 8754647 1092739121 12020130331