20315530241 has 2 divisors, whose sum is σ = 20315530242. Its totient is φ = 20315530240.

The previous prime is 20315530141. The next prime is 20315530267. The reversal of 20315530241 is 14203551302.

It is a happy number.

It is an a-pointer prime, because the next prime (20315530267) can be obtained adding 20315530241 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14183857216 + 6131673025 = 119096^2 + 78305^2 .

It is a cyclic number.

It is not a de Polignac number, because 20315530241 - 2²² = 20311335937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20315530241.

It is not a weakly prime, because it can be changed into another prime (20315530271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157765120 + 10157765121.

It is an arithmetic number, because the mean of its divisors is an integer number (10157765121).

Almost surely, 2^20315530241 is an apocalyptic number.

It is an amenable number.

20315530241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315530241 is an equidigital number, since it uses as much as digits as its factorization.

20315530241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 20315530241 in words is "twenty billion, three hundred fifteen million, five hundred thirty thousand, two hundred forty-one".