31663441 has 8 divisors (see below), whose sum is σ = 32140800. Its totient is φ = 31188960.

The previous prime is 31663417. The next prime is 31663559. The reversal of 31663441 is 14436613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31663441 - 2⁵ = 31663409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31663241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31456 + ... + 32446.

It is an arithmetic number, because the mean of its divisors is an integer number (4017600).

Almost surely, 2^31663441 is an apocalyptic number.

It is an amenable number.

31663441 is a deficient number, since it is larger than the sum of its proper divisors (477359).

31663441 is an equidigital number, since it uses as much as digits as its factorization.

31663441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439.

The product of its digits is 5184, while the sum is 28.

The square root of 31663441 is about 5627.0277234078. The cubic root of 31663441 is about 316.3632559514.

The spelling of 31663441 in words is "thirty-one million, six hundred sixty-three thousand, four hundred forty-one".