313200533981 has 2 divisors, whose sum is σ = 313200533982. Its totient is φ = 313200533980.

The previous prime is 313200533879. The next prime is 313200534013. The reversal of 313200533981 is 189335002313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264859476025 + 48341057956 = 514645^2 + 219866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313200533981 is a prime.

It is a super-2 number, since 2×313200533981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313200535981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156600266990 + 156600266991.

It is an arithmetic number, because the mean of its divisors is an integer number (156600266991).

Almost surely, 2^313200533981 is an apocalyptic number.

It is an amenable number.

313200533981 is a deficient number, since it is larger than the sum of its proper divisors (1).

313200533981 is an equidigital number, since it uses as much as digits as its factorization.

313200533981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 313200533981 in words is "three hundred thirteen billion, two hundred million, five hundred thirty-three thousand, nine hundred eighty-one".