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1201230141 = 31929726697
BaseRepresentation
bin100011110011001…
…0101000100111101
310002201022210222020
41013212111010331
54430003331031
6315110310353
741524200456
oct10746250475
93081283866
101201230141
11567076a91
122963583b9
13161b35387
14b577012d
15706d0096
hex4799513d

1201230141 has 16 divisors (see below), whose sum is σ = 1744075200. Its totient is φ = 732509568.

The previous prime is 1201230139. The next prime is 1201230169. The reversal of 1201230141 is 1410321021.

It is not a de Polignac number, because 1201230141 - 21 = 1201230139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201230141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201230101) 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, 361696 + ... + 365001.

It is an arithmetic number, because the mean of its divisors is an integer number (109004700).

Almost surely, 21201230141 is an apocalyptic number.

It is an amenable number.

1201230141 is a deficient number, since it is larger than the sum of its proper divisors (542845059).

1201230141 is a wasteful number, since it uses less digits than its factorization.

1201230141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726748.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1201230141 is about 34658.7671592629. The cubic root of 1201230141 is about 1063.0215618061.

Adding to 1201230141 its reverse (1410321021), we get a palindrome (2611551162).

The spelling of 1201230141 in words is "one billion, two hundred one million, two hundred thirty thousand, one hundred forty-one".

Divisors: 1 3 19 29 57 87 551 1653 726697 2180091 13807243 21074213 41421729 63222639 400410047 1201230141