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131010143021 = 1279102431699
BaseRepresentation
bin111101000000011010…
…0000010001100101101
3110112011022200211100022
41322000310002030231
54121302044034041
6140104002011525
712315360561512
oct1720064021455
9415138624308
10131010143021
11506198a057a
1221483046ba5
13c47b2536b4
1464ab6d7309
15361b89a24b
hex1e80d0232d

131010143021 has 4 divisors (see below), whose sum is σ = 131112576000. Its totient is φ = 130907710044.

The previous prime is 131010143009. The next prime is 131010143087. The reversal of 131010143021 is 120341010131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120341010131 = 241499340291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131010143021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131010143521) 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, 51214571 + ... + 51217128.

It is an arithmetic number, because the mean of its divisors is an integer number (32778144000).

Almost surely, 2131010143021 is an apocalyptic number.

It is an amenable number.

131010143021 is a deficient number, since it is larger than the sum of its proper divisors (102432979).

131010143021 is a wasteful number, since it uses less digits than its factorization.

131010143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102432978.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131010143021 its reverse (120341010131), we get a palindrome (251351153152).

The spelling of 131010143021 in words is "one hundred thirty-one billion, ten million, one hundred forty-three thousand, twenty-one".

Divisors: 1 1279 102431699 131010143021