30813029 has 8 divisors (see below), whose sum is σ = 33357912. Its totient is φ = 28293120.

The previous prime is 30813023. The next prime is 30813043. The reversal of 30813029 is 92031803.

It can be written as a sum of positive squares in 4 ways, for example, as 2244004 + 28569025 = 1498^2 + 5345^2 .

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 30813029 - 2⁸ = 30812773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30812989 and 30813007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30813023) 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, 3632 + ... + 8649.

It is an arithmetic number, because the mean of its divisors is an integer number (4169739).

Almost surely, 2^30813029 is an apocalyptic number.

It is an amenable number.

30813029 is a deficient number, since it is larger than the sum of its proper divisors (2544883).

30813029 is a wasteful number, since it uses less digits than its factorization.

30813029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12487.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 30813029 is about 5550.9484775126. The cubic root of 30813029 is about 313.5052352594.

The spelling of 30813029 in words is "thirty million, eight hundred thirteen thousand, twenty-nine".