231620442254 has 16 divisors (see below), whose sum is σ = 352399798800. Its totient is φ = 114160058880.

The previous prime is 231620442223. The next prime is 231620442257. The reversal of 231620442254 is 452244026132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231620442257) by changing a digit.

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, 1479257 + ... + 1628324.

It is an arithmetic number, because the mean of its divisors is an integer number (22024987425).

Almost surely, 2^231620442254 is an apocalyptic number.

231620442254 is a deficient number, since it is larger than the sum of its proper divisors (120779356546).

231620442254 is a wasteful number, since it uses less digits than its factorization.

231620442254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108115.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 231620442254 its reverse (452244026132), we get a palindrome (683864468386).

The spelling of 231620442254 in words is "two hundred thirty-one billion, six hundred twenty million, four hundred forty-two thousand, two hundred fifty-four".