231445240353 has 32 divisors (see below), whose sum is σ = 356189760000. Its totient is φ = 148352795136.

The previous prime is 231445240343. The next prime is 231445240363. The reversal of 231445240353 is 353042544132.

231445240353 is a `hidden beast` number, since 23 + 1 + 4 + 45 + 240 + 353 = 666.

It is an interprime number because it is at equal distance from previous prime (231445240343) and next prime (231445240363).

It is not a de Polignac number, because 231445240353 - 2⁶ = 231445240289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231445240343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431248 + ... + 805521.

It is an arithmetic number, because the mean of its divisors is an integer number (11130930000).

Almost surely, 2^231445240353 is an apocalyptic number.

It is an amenable number.

231445240353 is a deficient number, since it is larger than the sum of its proper divisors (124744519647).

231445240353 is a wasteful number, since it uses less digits than its factorization.

231445240353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237046 (or 1237040 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 231445240353 its reverse (353042544132), we get a palindrome (584487784485).

The spelling of 231445240353 in words is "two hundred thirty-one billion, four hundred forty-five million, two hundred forty thousand, three hundred fifty-three".