20203432061 has 2 divisors, whose sum is σ = 20203432062. Its totient is φ = 20203432060.

The previous prime is 20203432033. The next prime is 20203432063. The reversal of 20203432061 is 16023430202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19173663961 + 1029768100 = 138469^2 + 32090^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203432061 - 2¹⁴ = 20203415677 is a prime.

Together with 20203432063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203432063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101716030 + 10101716031.

It is an arithmetic number, because the mean of its divisors is an integer number (10101716031).

Almost surely, 2^20203432061 is an apocalyptic number.

It is an amenable number.

20203432061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203432061 is an equidigital number, since it uses as much as digits as its factorization.

20203432061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20203432061 its reverse (16023430202), we get a palindrome (36226862263).

The spelling of 20203432061 in words is "twenty billion, two hundred three million, four hundred thirty-two thousand, sixty-one".