231242542204534 has 16 divisors (see below), whose sum is σ = 396449090777088. Its totient is φ = 99095620623912.

The previous prime is 231242542204493. The next prime is 231242542204559. The reversal of 231242542204534 is 435402245242132.

It is a super-2 number, since 2×231242542204534² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693663672 + ... + 693996955.

It is an arithmetic number, because the mean of its divisors is an integer number (24778068173568).

Almost surely, 2^{231242542204534} is an apocalyptic number.

231242542204534 is a deficient number, since it is larger than the sum of its proper divisors (165206548572554).

231242542204534 is a wasteful number, since it uses less digits than its factorization.

231242542204534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387672539.

The product of its (nonzero) digits is 1843200, while the sum is 43.

Adding to 231242542204534 its reverse (435402245242132), we get a palindrome (666644787446666).

The spelling of 231242542204534 in words is "two hundred thirty-one trillion, two hundred forty-two billion, five hundred forty-two million, two hundred four thousand, five hundred thirty-four".