31247053 has 4 divisors (see below), whose sum is σ = 31258240. Its totient is φ = 31235868.

The previous prime is 31247023. The next prime is 31247089. The reversal of 31247053 is 35074213.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31247053 - 2¹³ = 31238861 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 (31247023) 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, 2518 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (7814560).

Almost surely, 2^31247053 is an apocalyptic number.

It is an amenable number.

31247053 is a deficient number, since it is larger than the sum of its proper divisors (11187).

31247053 is an equidigital number, since it uses as much as digits as its factorization.

31247053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11186.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 31247053 is about 5589.9063498417. The cubic root of 31247053 is about 314.9703608629.

The spelling of 31247053 in words is "thirty-one million, two hundred forty-seven thousand, fifty-three".