30677813 has 4 divisors (see below), whose sum is σ = 30703008. Its totient is φ = 30652620.

The previous prime is 30677807. The next prime is 30677819. The reversal of 30677813 is 31877603.

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 an emirpimes, since its reverse is a distinct semiprime: 31877603 = 1777 ⋅17939.

It is an interprime number because it is at equal distance from previous prime (30677807) and next prime (30677819).

It is a cyclic number.

It is not a de Polignac number, because 30677813 - 2¹² = 30673717 is a prime.

It is a super-2 number, since 2×30677813² = 1882256420925938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30677819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10673 + ... + 13238.

It is an arithmetic number, because the mean of its divisors is an integer number (7675752).

Almost surely, 2^30677813 is an apocalyptic number.

It is an amenable number.

30677813 is a deficient number, since it is larger than the sum of its proper divisors (25195).

30677813 is a wasteful number, since it uses less digits than its factorization.

30677813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25194.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 30677813 is about 5538.7555461493. The cubic root of 30677813 is about 313.0459805811.

The spelling of 30677813 in words is "thirty million, six hundred seventy-seven thousand, eight hundred thirteen".