232403136 has 168 divisors, whose sum is σ = 743224320. Its totient is φ = 62774784.

The previous prime is 232403131. The next prime is 232403137. The reversal of 232403136 is 631304232.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×232403136² = 108022435245268992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232403131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484945 + ... + 485423.

Almost surely, 2^232403136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 232403136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371612160).

232403136 is an abundant number, since it is smaller than the sum of its proper divisors (510821184).

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

232403136 is a wasteful number, since it uses less digits than its factorization.

232403136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 232403136 is about 15244.7740553935. The cubic root of 232403136 is about 614.8190676688.

Adding to 232403136 its reverse (631304232), we get a palindrome (863707368).

The spelling of 232403136 in words is "two hundred thirty-two million, four hundred three thousand, one hundred thirty-six".