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BaseRepresentation
bin11101110100010110101011…
…010110010110110101101101
3122012022222010112002002020200
4131310112223112112311231
5114142103443432312141
61142525221135304113
736423426663035211
oct3564265326266555
9565288115062220
10131141111213421
11388706a6490361
121286003897b039
1358237276bb63a
142455399650941
15102643437eab6
hex7745ab596d6d

131141111213421 has 24 divisors (see below), whose sum is σ = 190476836036760. Its totient is φ = 86942450563200.

The previous prime is 131141111213383. The next prime is 131141111213473. The reversal of 131141111213421 is 124312111141131.

131141111213421 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 4 + 11 + 11 + 213 + 421 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3724108742025 + 127417002471396 = 1929795^2 + 11287914^2 .

It is not a de Polignac number, because 131141111213421 - 219 = 131141110689133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131141111213621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74357235 + ... + 76100463.

It is an arithmetic number, because the mean of its divisors is an integer number (7936534834865).

Almost surely, 2131141111213421 is an apocalyptic number.

It is an amenable number.

131141111213421 is a deficient number, since it is larger than the sum of its proper divisors (59335724823339).

131141111213421 is a wasteful number, since it uses less digits than its factorization.

131141111213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789597 (or 1789594 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

Adding to 131141111213421 its reverse (124312111141131), we get a palindrome (255453222354552).

The spelling of 131141111213421 in words is "one hundred thirty-one trillion, one hundred forty-one billion, one hundred eleven million, two hundred thirteen thousand, four hundred twenty-one".