135626531 has 2 divisors, whose sum is σ = 135626532. Its totient is φ = 135626530.

The previous prime is 135626501. The next prime is 135626549.

135626531 is nontrivially palindromic in base 10.

135626531 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 palprime.

It is a cyclic number.

It is not a de Polignac number, because 135626531 - 2¹⁴ = 135610147 is a prime.

It is a super-2 number, since 2×135626531² = 36789111822187922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135626501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67813265 + 67813266.

It is an arithmetic number, because the mean of its divisors is an integer number (67813266).

Almost surely, 2^135626531 is an apocalyptic number.

135626531 is a deficient number, since it is larger than the sum of its proper divisors (1).

135626531 is an equidigital number, since it uses as much as digits as its factorization.

135626531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 32.

The square root of 135626531 is about 11645.8804304355. The cubic root of 135626531 is about 513.7851542456.

The spelling of 135626531 in words is "one hundred thirty-five million, six hundred twenty-six thousand, five hundred thirty-one".