134909431 has 2 divisors, whose sum is σ = 134909432. Its totient is φ = 134909430.

The previous prime is 134909429. The next prime is 134909441.

134909431 is nontrivially palindromic in base 10.

134909431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 134909431 - 2¹ = 134909429 is a prime.

It is a super-2 number, since 2×134909431² = 36401109145487522, which contains 22 as substring.

Together with 134909429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134909441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67454715 + 67454716.

It is an arithmetic number, because the mean of its divisors is an integer number (67454716).

Almost surely, 2^134909431 is an apocalyptic number.

134909431 is a deficient number, since it is larger than the sum of its proper divisors (1).

134909431 is an equidigital number, since it uses as much as digits as its factorization.

134909431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 134909431 is about 11615.0519155103. The cubic root of 134909431 is about 512.8780392195.

The spelling of 134909431 in words is "one hundred thirty-four million, nine hundred nine thousand, four hundred thirty-one".