136021337 has 4 divisors (see below), whose sum is σ = 138915456. Its totient is φ = 133127220.

The previous prime is 136021309. The next prime is 136021343. The reversal of 136021337 is 733120631.

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 not a de Polignac number, because 136021337 - 2¹² = 136017241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136021307) 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, 1446989 + ... + 1447082.

It is an arithmetic number, because the mean of its divisors is an integer number (34728864).

Almost surely, 2^136021337 is an apocalyptic number.

It is an amenable number.

136021337 is a deficient number, since it is larger than the sum of its proper divisors (2894119).

136021337 is an equidigital number, since it uses as much as digits as its factorization.

136021337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894118.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 136021337 is about 11662.8185701399. The cubic root of 136021337 is about 514.2832105661.

Adding to 136021337 its reverse (733120631), we get a palindrome (869141968).

The spelling of 136021337 in words is "one hundred thirty-six million, twenty-one thousand, three hundred thirty-seven".