135707431 has 2 divisors, whose sum is σ = 135707432. Its totient is φ = 135707430.

The previous prime is 135707359. The next prime is 135707449. The reversal of 135707431 is 134707531.

135707431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135707431 - 2⁷ = 135707303 is a prime.

It is a super-2 number, since 2×135707431² = 36833013657239522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135707393 and 135707402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135707531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67853715 + 67853716.

It is an arithmetic number, because the mean of its divisors is an integer number (67853716).

Almost surely, 2^135707431 is an apocalyptic number.

135707431 is a deficient number, since it is larger than the sum of its proper divisors (1).

135707431 is an equidigital number, since it uses as much as digits as its factorization.

135707431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 135707431 is about 11649.3532438501. The cubic root of 135707431 is about 513.8872900076.

The spelling of 135707431 in words is "one hundred thirty-five million, seven hundred seven thousand, four hundred thirty-one".