202321431313 has 2 divisors, whose sum is σ = 202321431314. Its totient is φ = 202321431312.

The previous prime is 202321431311. The next prime is 202321431371. The reversal of 202321431313 is 313134123202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201068837649 + 1252593664 = 448407^2 + 35392^2 .

It is a cyclic number.

It is not a de Polignac number, because 202321431313 - 2¹ = 202321431311 is a prime.

Together with 202321431311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202321431311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101160715656 + 101160715657.

It is an arithmetic number, because the mean of its divisors is an integer number (101160715657).

Almost surely, 2^202321431313 is an apocalyptic number.

It is an amenable number.

202321431313 is a deficient number, since it is larger than the sum of its proper divisors (1).

202321431313 is an equidigital number, since it uses as much as digits as its factorization.

202321431313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 202321431313 its reverse (313134123202), we get a palindrome (515455554515).

The spelling of 202321431313 in words is "two hundred two billion, three hundred twenty-one million, four hundred thirty-one thousand, three hundred thirteen".