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105512430131 = 963110955501
BaseRepresentation
bin110001001000100000…
…1111110101000110011
3101002100100020210210122
41202101001332220303
53212042140231011
6120245521320455
710423460600243
oct1422101765063
9332310223718
10105512430131
114082501a489
1218547a9612b
139c46886114
14516d1d1b23
152b281623db
hex189107ea33

105512430131 has 4 divisors (see below), whose sum is σ = 105523395264. Its totient is φ = 105501465000.

The previous prime is 105512430091. The next prime is 105512430167. The reversal of 105512430131 is 131034215501.

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 105512430131 - 210 = 105512429107 is a prime.

It is a super-2 number, since 2×1055124301312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105512430131.

It is not an unprimeable number, because it can be changed into a prime (105512432131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5468120 + ... + 5487381.

It is an arithmetic number, because the mean of its divisors is an integer number (26380848816).

Almost surely, 2105512430131 is an apocalyptic number.

105512430131 is a deficient number, since it is larger than the sum of its proper divisors (10965133).

105512430131 is an equidigital number, since it uses as much as digits as its factorization.

105512430131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10965132.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 105512430131 its reverse (131034215501), we get a palindrome (236546645632).

The spelling of 105512430131 in words is "one hundred five billion, five hundred twelve million, four hundred thirty thousand, one hundred thirty-one".

Divisors: 1 9631 10955501 105512430131