135803839631 has 2 divisors, whose sum is σ = 135803839632. Its totient is φ = 135803839630.

The previous prime is 135803839603. The next prime is 135803839649. The reversal of 135803839631 is 136938308531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135803839631 is a prime.

It is a super-2 number, since 2×135803839631² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135803839631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135803833631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67901919815 + 67901919816.

It is an arithmetic number, because the mean of its divisors is an integer number (67901919816).

Almost surely, 2^135803839631 is an apocalyptic number.

135803839631 is a deficient number, since it is larger than the sum of its proper divisors (1).

135803839631 is an equidigital number, since it uses as much as digits as its factorization.

135803839631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 135803839631 in words is "one hundred thirty-five billion, eight hundred three million, eight hundred thirty-nine thousand, six hundred thirty-one".