231625213353 has 12 divisors (see below), whose sum is σ = 334588084740. Its totient is φ = 154408347936.

The previous prime is 231625213349. The next prime is 231625213423. The reversal of 231625213353 is 353312526132.

231625213353 is a `hidden beast` number, since 2 + 3 + 1 + 625 + 21 + 3 + 3 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 143328873744 + 88296339609 = 378588^2 + 297147^2 .

It is not a de Polignac number, because 231625213353 - 2² = 231625213349 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231625213753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529398 + ... + 862271.

It is an arithmetic number, because the mean of its divisors is an integer number (27882340395).

Almost surely, 2^231625213353 is an apocalyptic number.

It is an amenable number.

231625213353 is a deficient number, since it is larger than the sum of its proper divisors (102962871387).

231625213353 is a wasteful number, since it uses less digits than its factorization.

231625213353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410168 (or 1410165 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

Adding to 231625213353 its reverse (353312526132), we get a palindrome (584937739485).

The spelling of 231625213353 in words is "two hundred thirty-one billion, six hundred twenty-five million, two hundred thirteen thousand, three hundred fifty-three".