133941481 has 2 divisors, whose sum is σ = 133941482. Its totient is φ = 133941480.

The previous prime is 133941473. The next prime is 133941491. The reversal of 133941481 is 184149331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131882256 + 2059225 = 11484^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 133941481 - 2³ = 133941473 is a prime.

It is a super-2 number, since 2×133941481² = 35880640664946722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133941491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66970740 + 66970741.

It is an arithmetic number, because the mean of its divisors is an integer number (66970741).

Almost surely, 2^133941481 is an apocalyptic number.

It is an amenable number.

133941481 is a deficient number, since it is larger than the sum of its proper divisors (1).

133941481 is an equidigital number, since it uses as much as digits as its factorization.

133941481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 133941481 is about 11573.3089909498. The cubic root of 133941481 is about 511.6484925068.

The spelling of 133941481 in words is "one hundred thirty-three million, nine hundred forty-one thousand, four hundred eighty-one".