135244442831 has 2 divisors, whose sum is σ = 135244442832. Its totient is φ = 135244442830.

The previous prime is 135244442783. The next prime is 135244442897. The reversal of 135244442831 is 138244442531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135244442831 - 2³⁴ = 118064573647 is a prime.

It is a super-2 number, since 2×135244442831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135244462831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67622221415 + 67622221416.

It is an arithmetic number, because the mean of its divisors is an integer number (67622221416).

Almost surely, 2^135244442831 is an apocalyptic number.

135244442831 is a deficient number, since it is larger than the sum of its proper divisors (1).

135244442831 is an equidigital number, since it uses as much as digits as its factorization.

135244442831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 41.

The spelling of 135244442831 in words is "one hundred thirty-five billion, two hundred forty-four million, four hundred forty-two thousand, eight hundred thirty-one".