136231633 has 4 divisors (see below), whose sum is σ = 136749888. Its totient is φ = 135713380.

The previous prime is 136231631. The next prime is 136231661. The reversal of 136231633 is 336132631.

136231633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336132631 = 61 ⋅5510371.

It is a cyclic number.

It is not a de Polignac number, because 136231633 - 2¹ = 136231631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136231631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258733 + ... + 259258.

It is an arithmetic number, because the mean of its divisors is an integer number (34187472).

Almost surely, 2^136231633 is an apocalyptic number.

It is an amenable number.

136231633 is a deficient number, since it is larger than the sum of its proper divisors (518255).

136231633 is an equidigital number, since it uses as much as digits as its factorization.

136231633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518254.

The product of its digits is 5832, while the sum is 28.

The square root of 136231633 is about 11671.8307475734. The cubic root of 136231633 is about 514.5481102165.

The spelling of 136231633 in words is "one hundred thirty-six million, two hundred thirty-one thousand, six hundred thirty-three".