32401231 has 16 divisors (see below), whose sum is σ = 34693120. Its totient is φ = 30209760.

The previous prime is 32401217. The next prime is 32401241. The reversal of 32401231 is 13210423.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 32401231 - 2⁵ = 32401199 is a prime.

It is a super-2 number, since 2×32401231² = 2099679540630722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32401211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145186 + ... + 145408.

It is an arithmetic number, because the mean of its divisors is an integer number (2168320).

Almost surely, 2^32401231 is an apocalyptic number.

32401231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

32401231 is a deficient number, since it is larger than the sum of its proper divisors (2291889).

32401231 is a wasteful number, since it uses less digits than its factorization.

32401231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 32401231 is about 5692.2079196038. The cubic root of 32401231 is about 318.8016081503.

Adding to 32401231 its reverse (13210423), we get a palindrome (45611654).

The spelling of 32401231 in words is "thirty-two million, four hundred one thousand, two hundred thirty-one".