136623312 has 240 divisors, whose sum is σ = 467970048. Its totient is φ = 36368640.

The previous prime is 136623307. The next prime is 136623317. The reversal of 136623312 is 213326631.

It is a happy number.

136623312 is a `hidden beast` number, since 1 + 3 + 6 + 623 + 31 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (136623307) and next prime (136623317).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136623317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1646023 + ... + 1646105.

Almost surely, 2^136623312 is an apocalyptic number.

136623312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136623312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233985024).

136623312 is an abundant number, since it is smaller than the sum of its proper divisors (331346736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136623312 is a wasteful number, since it uses less digits than its factorization.

136623312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 189 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 136623312 is about 11688.5975206609. The cubic root of 136623312 is about 515.0407634181.

Adding to 136623312 its reverse (213326631), we get a palindrome (349949943).

The spelling of 136623312 in words is "one hundred thirty-six million, six hundred twenty-three thousand, three hundred twelve".