133631417 has 2 divisors, whose sum is σ = 133631418. Its totient is φ = 133631416.

The previous prime is 133631363. The next prime is 133631461. The reversal of 133631417 is 714136331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 53421481 = 8956^2 + 7309^2 .

It is a cyclic number.

It is not a de Polignac number, because 133631417 - 2¹² = 133627321 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133631417.

It is not a weakly prime, because it can be changed into another prime (133631467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66815708 + 66815709.

It is an arithmetic number, because the mean of its divisors is an integer number (66815709).

Almost surely, 2^133631417 is an apocalyptic number.

It is an amenable number.

133631417 is a deficient number, since it is larger than the sum of its proper divisors (1).

133631417 is an equidigital number, since it uses as much as digits as its factorization.

133631417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 133631417 is about 11559.9055791992. The cubic root of 133631417 is about 511.2533787834.

Adding to 133631417 its reverse (714136331), we get a palindrome (847767748).

It can be divided in two parts, 1336314 and 17, that added together give a palindrome (1336331).

The spelling of 133631417 in words is "one hundred thirty-three million, six hundred thirty-one thousand, four hundred seventeen".