136220023 has 8 divisors (see below), whose sum is σ = 137183760. Its totient is φ = 135260160.

The previous prime is 136220011. The next prime is 136220033. The reversal of 136220023 is 320022631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136220023 - 2⁵ = 136219991 is a prime.

It is a super-2 number, since 2×136220023² = 37111789332241058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136220033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107568 + ... + 108826.

It is an arithmetic number, because the mean of its divisors is an integer number (17147970).

Almost surely, 2^136220023 is an apocalyptic number.

136220023 is a deficient number, since it is larger than the sum of its proper divisors (963737).

136220023 is a wasteful number, since it uses less digits than its factorization.

136220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 136220023 is about 11671.3333856933. Note that the first 4 decimals coincide. The cubic root of 136220023 is about 514.5334927762.

Adding to 136220023 its reverse (320022631), we get a palindrome (456242654).

It can be divided in two parts, 13 and 6220023, that added together give a square (6220036 = 2494²).

The spelling of 136220023 in words is "one hundred thirty-six million, two hundred twenty thousand, twenty-three".