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120012020231 = 139863395829
BaseRepresentation
bin110111111000101000…
…1100001101000000111
3102110202211210022011012
41233301101201220013
53431241034121411
6131044402032435
711446003224545
oct1576121415007
9373684708135
10120012020231
11469957250a4
121b31394871b
13b41783562c
145b46b94d95
1531c607c18b
hex1bf1461a07

120012020231 has 4 divisors (see below), whose sum is σ = 120875416200. Its totient is φ = 119148624264.

The previous prime is 120012020209. The next prime is 120012020237. The reversal of 120012020231 is 132020210021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120012020231 - 214 = 120012003847 is a prime.

It is a super-2 number, since 2×1200120202312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012020237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431697776 + ... + 431698053.

It is an arithmetic number, because the mean of its divisors is an integer number (30218854050).

Almost surely, 2120012020231 is an apocalyptic number.

120012020231 is a deficient number, since it is larger than the sum of its proper divisors (863395969).

120012020231 is an equidigital number, since it uses as much as digits as its factorization.

120012020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863395968.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 120012020231 its reverse (132020210021), we get a palindrome (252032230252).

The spelling of 120012020231 in words is "one hundred twenty billion, twelve million, twenty thousand, two hundred thirty-one".

Divisors: 1 139 863395829 120012020231