20213130071 has 2 divisors, whose sum is σ = 20213130072. Its totient is φ = 20213130070.

The previous prime is 20213130001. The next prime is 20213130137. The reversal of 20213130071 is 17003131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213130071 - 2²² = 20208935767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213130001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106565035 + 10106565036.

It is an arithmetic number, because the mean of its divisors is an integer number (10106565036).

Almost surely, 2^20213130071 is an apocalyptic number.

20213130071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213130071 is an equidigital number, since it uses as much as digits as its factorization.

20213130071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

Adding to 20213130071 its reverse (17003131202), we get a palindrome (37216261273).

The spelling of 20213130071 in words is "twenty billion, two hundred thirteen million, one hundred thirty thousand, seventy-one".