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131024853873 = 3214558317097
BaseRepresentation
bin111101000000110110…
…0001001101101110001
3110112012100101012211200
41322001230021231301
54121314330310443
6140105245201413
712315626611344
oct1720154115561
9415170335750
10131024853873
1150627129001
1221487b60269
13c481304544
1464ad64645b
15361cd03dd3
hex1e81b09b71

131024853873 has 6 divisors (see below), whose sum is σ = 189258122274. Its totient is φ = 87349902576.

The previous prime is 131024853823. The next prime is 131024853877. The reversal of 131024853873 is 378358420131.

131024853873 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 2 + 48 + 538 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 127500413184 + 3524440689 = 357072^2 + 59367^2 .

It is not a de Polignac number, because 131024853873 - 221 = 131022756721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131024853877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7279158540 + ... + 7279158557.

It is an arithmetic number, because the mean of its divisors is an integer number (31543020379).

Almost surely, 2131024853873 is an apocalyptic number.

It is an amenable number.

131024853873 is a deficient number, since it is larger than the sum of its proper divisors (58233268401).

131024853873 is a wasteful number, since it uses less digits than its factorization.

131024853873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14558317103 (or 14558317100 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 131024853873 in words is "one hundred thirty-one billion, twenty-four million, eight hundred fifty-three thousand, eight hundred seventy-three".

Divisors: 1 3 9 14558317097 43674951291 131024853873