223531431530 has 32 divisors (see below), whose sum is σ = 438957334080. Its totient is φ = 81279918720.

The previous prime is 223531431503. The next prime is 223531431533. The reversal of 223531431530 is 35134135322.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223531431533) 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, 2725766 + ... + 2806574.

It is an arithmetic number, because the mean of its divisors is an integer number (13717416690).

Almost surely, 2^223531431530 is an apocalyptic number.

223531431530 is a deficient number, since it is larger than the sum of its proper divisors (215425902550).

223531431530 is a wasteful number, since it uses less digits than its factorization.

223531431530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105974.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 223531431530 its reverse (35134135322), we get a palindrome (258665566852).

The spelling of 223531431530 in words is "two hundred twenty-three billion, five hundred thirty-one million, four hundred thirty-one thousand, five hundred thirty".