231685993753 has 2 divisors, whose sum is σ = 231685993754. Its totient is φ = 231685993752.

The previous prime is 231685993733. The next prime is 231685993783. The reversal of 231685993753 is 357399586132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147845633049 + 83840360704 = 384507^2 + 289552^2 .

It is a cyclic number.

It is not a de Polignac number, because 231685993753 - 2⁹ = 231685993241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231685993691 and 231685993700.

It is not a weakly prime, because it can be changed into another prime (231685993733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115842996876 + 115842996877.

It is an arithmetic number, because the mean of its divisors is an integer number (115842996877).

Almost surely, 2^231685993753 is an apocalyptic number.

It is an amenable number.

231685993753 is a deficient number, since it is larger than the sum of its proper divisors (1).

231685993753 is an equidigital number, since it uses as much as digits as its factorization.

231685993753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36741600, while the sum is 61.

The spelling of 231685993753 in words is "two hundred thirty-one billion, six hundred eighty-five million, nine hundred ninety-three thousand, seven hundred fifty-three".