231331043403 has 12 divisors (see below), whose sum is σ = 335990946928. Its totient is φ = 153368646480.

The previous prime is 231331043389. The next prime is 231331043477. The reversal of 231331043403 is 304340133132.

231331043403 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 310 + 4 + 340 + 3 = 666.

It is not a de Polignac number, because 231331043403 - 2¹⁸ = 231330781259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231331043303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71002375 + ... + 71005632.

Almost surely, 2^231331043403 is an apocalyptic number.

231331043403 is a deficient number, since it is larger than the sum of its proper divisors (104659903525).

231331043403 is a wasteful number, since it uses less digits than its factorization.

231331043403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142008194 (or 142008191 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 231331043403 its reverse (304340133132), we get a palindrome (535671176535).

The spelling of 231331043403 in words is "two hundred thirty-one billion, three hundred thirty-one million, forty-three thousand, four hundred three".