308236135153 has 4 divisors (see below), whose sum is σ = 308373558768. Its totient is φ = 308098711540.

The previous prime is 308236135147. The next prime is 308236135169. The reversal of 308236135153 is 351531632803.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308236135153 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308236138153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68708443 + ... + 68712928.

It is an arithmetic number, because the mean of its divisors is an integer number (77093389692).

Almost surely, 2^308236135153 is an apocalyptic number.

It is an amenable number.

308236135153 is a deficient number, since it is larger than the sum of its proper divisors (137423615).

308236135153 is a wasteful number, since it uses less digits than its factorization.

308236135153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137423614.

The product of its (nonzero) digits is 194400, while the sum is 40.

Adding to 308236135153 its reverse (351531632803), we get a palindrome (659767767956).

The spelling of 308236135153 in words is "three hundred eight billion, two hundred thirty-six million, one hundred thirty-five thousand, one hundred fifty-three".