135391631417 has 8 divisors (see below), whose sum is σ = 154738957056. Its totient is φ = 116045721792.

The previous prime is 135391631407. The next prime is 135391631461. The reversal of 135391631417 is 714136193531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135391631417 - 2²⁴ = 135374854201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135391631407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140528 + ... + 539009.

It is an arithmetic number, because the mean of its divisors is an integer number (19342369632).

Almost surely, 2^135391631417 is an apocalyptic number.

It is an amenable number.

135391631417 is a deficient number, since it is larger than the sum of its proper divisors (19347325639).

135391631417 is an equidigital number, since it uses as much as digits as its factorization.

135391631417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708007.

The product of its digits is 204120, while the sum is 44.

The spelling of 135391631417 in words is "one hundred thirty-five billion, three hundred ninety-one million, six hundred thirty-one thousand, four hundred seventeen".