135332031421 has 2 divisors, whose sum is σ = 135332031422. Its totient is φ = 135332031420.

The previous prime is 135332031409. The next prime is 135332031433. The reversal of 135332031421 is 124130233531.

It is a balanced prime because it is at equal distance from previous prime (135332031409) and next prime (135332031433).

It can be written as a sum of positive squares in only one way, i.e., 131434526521 + 3897504900 = 362539^2 + 62430^2 .

It is a cyclic number.

It is not a de Polignac number, because 135332031421 - 2¹¹ = 135332029373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135332031421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135332031451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67666015710 + 67666015711.

It is an arithmetic number, because the mean of its divisors is an integer number (67666015711).

Almost surely, 2^135332031421 is an apocalyptic number.

It is an amenable number.

135332031421 is a deficient number, since it is larger than the sum of its proper divisors (1).

135332031421 is an equidigital number, since it uses as much as digits as its factorization.

135332031421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 135332031421 its reverse (124130233531), we get a palindrome (259462264952).

The spelling of 135332031421 in words is "one hundred thirty-five billion, three hundred thirty-two million, thirty-one thousand, four hundred twenty-one".