231242253405 has 16 divisors (see below), whose sum is σ = 376968504960. Its totient is φ = 121002235328.

The previous prime is 231242253377. The next prime is 231242253409. The reversal of 231242253405 is 504352242132.

It is a cyclic number.

It is not a de Polignac number, because 231242253405 - 2¹⁷ = 231242122333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231242253409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145434585 + ... + 145436174.

It is an arithmetic number, because the mean of its divisors is an integer number (23560531560).

Almost surely, 2^231242253405 is an apocalyptic number.

It is an amenable number.

231242253405 is a deficient number, since it is larger than the sum of its proper divisors (145726251555).

231242253405 is a wasteful number, since it uses less digits than its factorization.

231242253405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290870820.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 231242253405 its reverse (504352242132), we get a palindrome (735594495537).

The spelling of 231242253405 in words is "two hundred thirty-one billion, two hundred forty-two million, two hundred fifty-three thousand, four hundred five".