231433220041 has 4 divisors (see below), whose sum is σ = 237688171972. Its totient is φ = 225178268112.

The previous prime is 231433220017. The next prime is 231433220047. The reversal of 231433220041 is 140022334132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141454218816 + 89979001225 = 376104^2 + 299965^2 .

It is a cyclic number.

It is not a de Polignac number, because 231433220041 - 2¹¹ = 231433217993 is a prime.

It is a super-2 number, since 2×231433220041² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231433219988 and 231433220015.

It is not an unprimeable number, because it can be changed into a prime (231433220047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3127475910 + ... + 3127475983.

It is an arithmetic number, because the mean of its divisors is an integer number (59422042993).

Almost surely, 2^231433220041 is an apocalyptic number.

It is an amenable number.

231433220041 is a deficient number, since it is larger than the sum of its proper divisors (6254951931).

231433220041 is an equidigital number, since it uses as much as digits as its factorization.

231433220041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6254951930.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 231433220041 its reverse (140022334132), we get a palindrome (371455554173).

The spelling of 231433220041 in words is "two hundred thirty-one billion, four hundred thirty-three million, two hundred twenty thousand, forty-one".