232135551 has 10 divisors (see below), whose sum is σ = 346770512. Its totient is φ = 154756980.

The previous prime is 232135549. The next prime is 232135583. The reversal of 232135551 is 155531232.

It is a happy number.

It is not a de Polignac number, because 232135551 - 2¹ = 232135549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232135531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1432855 + ... + 1433016.

Almost surely, 2^232135551 is an apocalyptic number.

232135551 is a deficient number, since it is larger than the sum of its proper divisors (114634961).

232135551 is an equidigital number, since it uses as much as digits as its factorization.

232135551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865883 (or 2865874 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 232135551 is about 15235.9952415325. The cubic root of 232135551 is about 614.5830129925.

Adding to 232135551 its reverse (155531232), we get a palindrome (387666783).

The spelling of 232135551 in words is "two hundred thirty-two million, one hundred thirty-five thousand, five hundred fifty-one".