3697231 has 4 divisors (see below), whose sum is σ = 3747952. Its totient is φ = 3646512.

The previous prime is 3697223. The next prime is 3697241. The reversal of 3697231 is 1327963.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3697231 - 2³ = 3697223 is a prime.

It is a super-2 number, since 2×3697231² = 27339034134722, which contains 22 as substring.

It is a Duffinian number.

3697231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3697193 and 3697202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3697241) 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, 25251 + ... + 25396.

It is an arithmetic number, because the mean of its divisors is an integer number (936988).

Almost surely, 2^3697231 is an apocalyptic number.

3697231 is a deficient number, since it is larger than the sum of its proper divisors (50721).

3697231 is an equidigital number, since it uses as much as digits as its factorization.

3697231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50720.

The product of its digits is 6804, while the sum is 31.

The square root of 3697231 is about 1922.8185041756. The cubic root of 3697231 is about 154.6294443432.

The spelling of 3697231 in words is "three million, six hundred ninety-seven thousand, two hundred thirty-one".