231533500134403 has 2 divisors, whose sum is σ = 231533500134404. Its totient is φ = 231533500134402.

The previous prime is 231533500134379. The next prime is 231533500134413. The reversal of 231533500134403 is 304431005335132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231533500134403 - 2³³ = 231524910199811 is a prime.

It is not a weakly prime, because it can be changed into another prime (231533500134413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115766750067201 + 115766750067202.

It is an arithmetic number, because the mean of its divisors is an integer number (115766750067202).

Almost surely, 2^{231533500134403} is an apocalyptic number.

231533500134403 is a deficient number, since it is larger than the sum of its proper divisors (1).

231533500134403 is an equidigital number, since it uses as much as digits as its factorization.

231533500134403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 231533500134403 its reverse (304431005335132), we get a palindrome (535964505469535).

The spelling of 231533500134403 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, five hundred million, one hundred thirty-four thousand, four hundred three".