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131211010441 = 718744430063
BaseRepresentation
bin111101000110011001…
…0010010000110001001
3110112200022122221122101
41322030302102012021
54122210004313231
6140135535153401
712323350121020
oct1721462220611
9415608587571
10131211010441
1150712216205
122151a375861
13c4b0a52764
1464ca2638b7
15362e326661
hex1e8cc92189

131211010441 has 4 divisors (see below), whose sum is σ = 149955440512. Its totient is φ = 112466580372.

The previous prime is 131211010423. The next prime is 131211010451. The reversal of 131211010441 is 144010112131.

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: 144010112131 = 532717171927.

It is a cyclic number.

It is not a de Polignac number, because 131211010441 - 213 = 131211002249 is a prime.

It is a super-2 number, since 2×1312110104412 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131211010451) 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, 9372215025 + ... + 9372215038.

It is an arithmetic number, because the mean of its divisors is an integer number (37488860128).

Almost surely, 2131211010441 is an apocalyptic number.

It is an amenable number.

131211010441 is a deficient number, since it is larger than the sum of its proper divisors (18744430071).

131211010441 is an equidigital number, since it uses as much as digits as its factorization.

131211010441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18744430070.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 131211010441 its reverse (144010112131), we get a palindrome (275221122572).

The spelling of 131211010441 in words is "one hundred thirty-one billion, two hundred eleven million, ten thousand, four hundred forty-one".

Divisors: 1 7 18744430063 131211010441