32136381 has 12 divisors (see below), whose sum is σ = 46545408. Its totient is φ = 21366024.

The previous prime is 32136373. The next prime is 32136389. The reversal of 32136381 is 18363123.

It is a happy number.

32136381 is a `hidden beast` number, since 3 + 21 + 3 + 638 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (32136373) and next prime (32136389).

It is not a de Polignac number, because 32136381 - 2³ = 32136373 is a prime.

It is a super-2 number, since 2×32136381² = 2065493967554322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32136389) 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, 1215 + ... + 8108.

It is an arithmetic number, because the mean of its divisors is an integer number (3878784).

Almost surely, 2^32136381 is an apocalyptic number.

It is an amenable number.

32136381 is a deficient number, since it is larger than the sum of its proper divisors (14409027).

32136381 is a wasteful number, since it uses less digits than its factorization.

32136381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9712 (or 9709 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 32136381 is about 5668.8959242519. The cubic root of 32136381 is about 317.9305947973.

The spelling of 32136381 in words is "thirty-two million, one hundred thirty-six thousand, three hundred eighty-one".