231531423513022 has 32 divisors (see below), whose sum is σ = 377399390670432. Its totient is φ = 106119897621504.

The previous prime is 231531423513007. The next prime is 231531423513079. The reversal of 231531423513022 is 220315324135132.

231531423513022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468679428 + ... + 469173175.

It is an arithmetic number, because the mean of its divisors is an integer number (11793730958451).

Almost surely, 2^{231531423513022} is an apocalyptic number.

231531423513022 is a deficient number, since it is larger than the sum of its proper divisors (145867967157410).

231531423513022 is a wasteful number, since it uses less digits than its factorization.

231531423513022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937852812.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 231531423513022 its reverse (220315324135132), we get a palindrome (451846747648154).

The spelling of 231531423513022 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, four hundred twenty-three million, five hundred thirteen thousand, twenty-two".