30531713 has 4 divisors (see below), whose sum is σ = 30598980. Its totient is φ = 30464448.

The previous prime is 30531703. The next prime is 30531731. The reversal of 30531713 is 31713503.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13126129 + 17405584 = 3623^2 + 4172^2 .

It is a cyclic number.

It is not a de Polignac number, because 30531713 - 2¹² = 30527617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30531703) 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, 32948 + ... + 33861.

It is an arithmetic number, because the mean of its divisors is an integer number (7649745).

Almost surely, 2^30531713 is an apocalyptic number.

It is an amenable number.

30531713 is a deficient number, since it is larger than the sum of its proper divisors (67267).

30531713 is an equidigital number, since it uses as much as digits as its factorization.

30531713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67266.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 30531713 is about 5525.5509227587. The cubic root of 30531713 is about 312.5482395930.

The spelling of 30531713 in words is "thirty million, five hundred thirty-one thousand, seven hundred thirteen".