136021023 has 12 divisors (see below), whose sum is σ = 196910688. Its totient is φ = 90479520.

The previous prime is 136021021. The next prime is 136021031. The reversal of 136021023 is 320120631.

It is not a de Polignac number, because 136021023 - 2¹ = 136021021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136020987 and 136021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136021021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12423 + ... + 20648.

It is an arithmetic number, because the mean of its divisors is an integer number (16409224).

Almost surely, 2^136021023 is an apocalyptic number.

136021023 is a deficient number, since it is larger than the sum of its proper divisors (60889665).

136021023 is a wasteful number, since it uses less digits than its factorization.

136021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33534 (or 33531 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 136021023 is about 11662.8051085491. The cubic root of 136021023 is about 514.2828148315.

Adding to 136021023 its reverse (320120631), we get a palindrome (456141654).

The spelling of 136021023 in words is "one hundred thirty-six million, twenty-one thousand, twenty-three".