30504531 has 4 divisors (see below), whose sum is σ = 40672712. Its totient is φ = 20336352.

The previous prime is 30504503. The next prime is 30504569. The reversal of 30504531 is 13540503.

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

It is not a de Polignac number, because 30504531 - 2¹⁰ = 30503507 is a prime.

It is a super-2 number, since 2×30504531² = 1861052823059922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30504498 and 30504507.

It is not an unprimeable number, because it can be changed into a prime (30504431) 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, 5084086 + ... + 5084091.

It is an arithmetic number, because the mean of its divisors is an integer number (10168178).

Almost surely, 2^30504531 is an apocalyptic number.

30504531 is a deficient number, since it is larger than the sum of its proper divisors (10168181).

30504531 is a wasteful number, since it uses less digits than its factorization.

30504531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168180.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 30504531 is about 5523.0907108249. The cubic root of 30504531 is about 312.4554594653.

The spelling of 30504531 in words is "thirty million, five hundred four thousand, five hundred thirty-one".