245531331401 has 2 divisors, whose sum is σ = 245531331402. Its totient is φ = 245531331400.

The previous prime is 245531331377. The next prime is 245531331439. The reversal of 245531331401 is 104133135542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202568405776 + 42962925625 = 450076^2 + 207275^2 .

It is a cyclic number.

It is not a de Polignac number, because 245531331401 - 2³⁰ = 244457589577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (245531321401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122765665700 + 122765665701.

It is an arithmetic number, because the mean of its divisors is an integer number (122765665701).

Almost surely, 2^245531331401 is an apocalyptic number.

It is an amenable number.

245531331401 is a deficient number, since it is larger than the sum of its proper divisors (1).

245531331401 is an equidigital number, since it uses as much as digits as its factorization.

245531331401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 245531331401 its reverse (104133135542), we get a palindrome (349664466943).

The spelling of 245531331401 in words is "two hundred forty-five billion, five hundred thirty-one million, three hundred thirty-one thousand, four hundred one".