231553535211223 has 12 divisors (see below), whose sum is σ = 234538291895040. Its totient is φ = 228606298024416.

The previous prime is 231553535211197. The next prime is 231553535211277. The reversal of 231553535211223 is 322112535355132.

It is not a de Polignac number, because 231553535211223 - 2¹⁷ = 231553535080151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231553535211223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231553535211023) 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, 87360123 + ... + 89971651.

It is an arithmetic number, because the mean of its divisors is an integer number (19544857657920).

Almost surely, 2^{231553535211223} is an apocalyptic number.

231553535211223 is a deficient number, since it is larger than the sum of its proper divisors (2984756683817).

231553535211223 is an equidigital number, since it uses as much as digits as its factorization.

231553535211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625894 (or 2625815 counting only the distinct ones).

The product of its digits is 810000, while the sum is 43.

The spelling of 231553535211223 in words is "two hundred thirty-one trillion, five hundred fifty-three billion, five hundred thirty-five million, two hundred eleven thousand, two hundred twenty-three".