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11873960831 = 15629759739
BaseRepresentation
bin10110000111011111…
…00100001101111111
31010122111221201010002
423003233210031333
5143304213221311
65242124104515
7600151000415
oct130357441577
933574851102
1011873960831
1150435a5577
12237469513b
131173004b35
14808dad2b5
1549767593b
hex2c3be437f

11873960831 has 4 divisors (see below), whose sum is σ = 11874736200. Its totient is φ = 11873185464.

The previous prime is 11873960797. The next prime is 11873960837. The reversal of 11873960831 is 13806937811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13806937811 = 43321091577.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11873960831 is a prime.

It is a super-2 number, since 2×118739608312 (a number of 21 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 (11873960837) 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, 364241 + ... + 395498.

It is an arithmetic number, because the mean of its divisors is an integer number (2968684050).

Almost surely, 211873960831 is an apocalyptic number.

11873960831 is a deficient number, since it is larger than the sum of its proper divisors (775369).

11873960831 is an equidigital number, since it uses as much as digits as its factorization.

11873960831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775368.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 11873960831 in words is "eleven billion, eight hundred seventy-three million, nine hundred sixty thousand, eight hundred thirty-one".

Divisors: 1 15629 759739 11873960831