201620351 has 2 divisors, whose sum is σ = 201620352. Its totient is φ = 201620350.

The previous prime is 201620327. The next prime is 201620389. The reversal of 201620351 is 153026102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201620351 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201620651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100810175 + 100810176.

It is an arithmetic number, because the mean of its divisors is an integer number (100810176).

Almost surely, 2^201620351 is an apocalyptic number.

201620351 is a deficient number, since it is larger than the sum of its proper divisors (1).

201620351 is an equidigital number, since it uses as much as digits as its factorization.

201620351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 201620351 is about 14199.3081169471. The cubic root of 201620351 is about 586.3786133597.

Adding to 201620351 its reverse (153026102), we get a palindrome (354646453).

The spelling of 201620351 in words is "two hundred one million, six hundred twenty thousand, three hundred fifty-one".