320251132541 has 2 divisors, whose sum is σ = 320251132542. Its totient is φ = 320251132540.

The previous prime is 320251132511. The next prime is 320251132559. The reversal of 320251132541 is 145231152023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229580889316 + 90670243225 = 479146^2 + 301115^2 .

It is an emirp because it is prime and its reverse (145231152023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320251132541 - 2³⁰ = 319177390717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320251132511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160125566270 + 160125566271.

It is an arithmetic number, because the mean of its divisors is an integer number (160125566271).

Almost surely, 2^320251132541 is an apocalyptic number.

It is an amenable number.

320251132541 is a deficient number, since it is larger than the sum of its proper divisors (1).

320251132541 is an equidigital number, since it uses as much as digits as its factorization.

320251132541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 320251132541 its reverse (145231152023), we get a palindrome (465482284564).

The spelling of 320251132541 in words is "three hundred twenty billion, two hundred fifty-one million, one hundred thirty-two thousand, five hundred forty-one".