134505431 has 2 divisors, whose sum is σ = 134505432. Its totient is φ = 134505430.

The previous prime is 134505421. The next prime is 134505439.

134505431 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134505431 is a prime.

It is a super-2 number, since 2×134505431² = 36183421936991522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134505431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134505439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67252715 + 67252716.

It is an arithmetic number, because the mean of its divisors is an integer number (67252716).

Almost surely, 2^134505431 is an apocalyptic number.

134505431 is a deficient number, since it is larger than the sum of its proper divisors (1).

134505431 is an equidigital number, since it uses as much as digits as its factorization.

134505431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 134505431 is about 11597.6476494158. The cubic root of 134505431 is about 512.3655721988.

It can be divided in two parts, 13450 and 5431, that added together give a palindrome (18881).

The spelling of 134505431 in words is "one hundred thirty-four million, five hundred five thousand, four hundred thirty-one".