201981383 has 2 divisors, whose sum is σ = 201981384. Its totient is φ = 201981382.

The previous prime is 201981371. The next prime is 201981397. The reversal of 201981383 is 383189102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201981383 - 2¹² = 201977287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201981313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100990691 + 100990692.

It is an arithmetic number, because the mean of its divisors is an integer number (100990692).

Almost surely, 2^201981383 is an apocalyptic number.

201981383 is a deficient number, since it is larger than the sum of its proper divisors (1).

201981383 is an equidigital number, since it uses as much as digits as its factorization.

201981383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 201981383 is about 14212.0154446862. The cubic root of 201981383 is about 586.7284047817.

The spelling of 201981383 in words is "two hundred one million, nine hundred eighty-one thousand, three hundred eighty-three".