231403064 has 16 divisors (see below), whose sum is σ = 448842600. Its totient is φ = 111711712.

The previous prime is 231403063. The next prime is 231403079. The reversal of 231403064 is 460304132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231403063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498482 + ... + 498945.

Almost surely, 2^231403064 is an apocalyptic number.

It is an amenable number.

231403064 is a deficient number, since it is larger than the sum of its proper divisors (217439536).

231403064 is a wasteful number, since it uses less digits than its factorization.

231403064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997462 (or 997458 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 231403064 is about 15211.9382065534. The cubic root of 231403064 is about 613.9359077494.

Adding to 231403064 its reverse (460304132), we get a palindrome (691707196).

The spelling of 231403064 in words is "two hundred thirty-one million, four hundred three thousand, sixty-four".