201370681 has 4 divisors (see below), whose sum is σ = 210125952. Its totient is φ = 192615412.

The previous prime is 201370667. The next prime is 201370703. The reversal of 201370681 is 186073102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201370681 - 2⁷ = 201370553 is a prime.

It is a super-2 number, since 2×201370681² = 81100302332807522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201370621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4377601 + ... + 4377646.

It is an arithmetic number, because the mean of its divisors is an integer number (52531488).

Almost surely, 2^201370681 is an apocalyptic number.

It is an amenable number.

201370681 is a deficient number, since it is larger than the sum of its proper divisors (8755271).

201370681 is an equidigital number, since it uses as much as digits as its factorization.

201370681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755270.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 201370681 is about 14190.5137680071. The cubic root of 201370681 is about 586.1364724256.

The spelling of 201370681 in words is "two hundred one million, three hundred seventy thousand, six hundred eighty-one".