20315231483 has 2 divisors, whose sum is σ = 20315231484. Its totient is φ = 20315231482.

The previous prime is 20315231479. The next prime is 20315231501. The reversal of 20315231483 is 38413251302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20315231483 - 2² = 20315231479 is a prime.

It is not a weakly prime, because it can be changed into another prime (20315231423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157615741 + 10157615742.

It is an arithmetic number, because the mean of its divisors is an integer number (10157615742).

Almost surely, 2^20315231483 is an apocalyptic number.

20315231483 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315231483 is an equidigital number, since it uses as much as digits as its factorization.

20315231483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 20315231483 its reverse (38413251302), we get a palindrome (58728482785).

The spelling of 20315231483 in words is "twenty billion, three hundred fifteen million, two hundred thirty-one thousand, four hundred eighty-three".