231400032 has 24 divisors (see below), whose sum is σ = 607425336. Its totient is φ = 77133312.

The previous prime is 231400003. The next prime is 231400049. The reversal of 231400032 is 230004132.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 231399984 and 231400020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205113 + ... + 1205304.

It is an arithmetic number, because the mean of its divisors is an integer number (25309389).

Almost surely, 2^231400032 is an apocalyptic number.

It is an amenable number.

231400032 is an abundant number, since it is smaller than the sum of its proper divisors (376025304).

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

231400032 is a wasteful number, since it uses less digits than its factorization.

231400032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410430 (or 2410422 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 231400032 is about 15211.8385476575. The cubic root of 231400032 is about 613.9332263360.

Adding to 231400032 its reverse (230004132), we get a palindrome (461404164).

The spelling of 231400032 in words is "two hundred thirty-one million, four hundred thousand, thirty-two".