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120211013031 = 3173521444569
BaseRepresentation
bin110111111110100100…
…0100111110110100111
3102111021201020011221220
41233331020213312213
53432143004404111
6131120231111423
711453640515514
oct1577510476647
9374251204856
10120211013031
1146a87a8a35a
121b36a512573
13b449b29355
145b6539430b
1531d8787e06
hex1bfd227da7

120211013031 has 16 divisors (see below), whose sum is σ = 161517615840. Its totient is φ = 79524323840.

The previous prime is 120211013029. The next prime is 120211013057. The reversal of 120211013031 is 130310112021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120211013031 - 21 = 120211013029 is a prime.

It is a super-2 number, since 2×1202110130312 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120211013031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211013081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48115 + ... + 492683.

It is an arithmetic number, because the mean of its divisors is an integer number (10094850990).

Almost surely, 2120211013031 is an apocalyptic number.

120211013031 is a deficient number, since it is larger than the sum of its proper divisors (41306602809).

120211013031 is a wasteful number, since it uses less digits than its factorization.

120211013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445266.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 120211013031 its reverse (130310112021), we get a palindrome (250521125052).

The spelling of 120211013031 in words is "one hundred twenty billion, two hundred eleven million, thirteen thousand, thirty-one".

Divisors: 1 3 173 519 521 1563 90133 270399 444569 1333707 76910437 230731311 231620449 694861347 40070337677 120211013031