31665053 has 4 divisors (see below), whose sum is σ = 36188640. Its totient is φ = 27141468.

The previous prime is 31665041. The next prime is 31665059. The reversal of 31665053 is 35056613.

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 31665053 - 2²⁰ = 30616477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31665059) 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, 2261783 + ... + 2261796.

It is an arithmetic number, because the mean of its divisors is an integer number (9047160).

Almost surely, 2^31665053 is an apocalyptic number.

It is an amenable number.

31665053 is a deficient number, since it is larger than the sum of its proper divisors (4523587).

31665053 is an equidigital number, since it uses as much as digits as its factorization.

31665053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523586.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 31665053 is about 5627.1709588389. The cubic root of 31665053 is about 316.3686245921.

The spelling of 31665053 in words is "thirty-one million, six hundred sixty-five thousand, fifty-three".