231323544535 has 16 divisors (see below), whose sum is σ = 278230980960. Its totient is φ = 184630717440.

The previous prime is 231323544527. The next prime is 231323544547. The reversal of 231323544535 is 535445323132.

It is not a de Polignac number, because 231323544535 - 2³ = 231323544527 is a prime.

It is a super-2 number, since 2×231323544535² (a number of 24 digits) contains 22 as substring.

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, 5306980 + ... + 5350390.

It is an arithmetic number, because the mean of its divisors is an integer number (17389436310).

Almost surely, 2^231323544535 is an apocalyptic number.

231323544535 is a deficient number, since it is larger than the sum of its proper divisors (46907436425).

231323544535 is a wasteful number, since it uses less digits than its factorization.

231323544535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45858.

The product of its digits is 648000, while the sum is 40.

Adding to 231323544535 its reverse (535445323132), we get a palindrome (766768867667).

The spelling of 231323544535 in words is "two hundred thirty-one billion, three hundred twenty-three million, five hundred forty-four thousand, five hundred thirty-five".