30540331 has 4 divisors (see below), whose sum is σ = 30694000. Its totient is φ = 30386664.

The previous prime is 30540329. The next prime is 30540337. The reversal of 30540331 is 13304503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13304503 = 19 ⋅700237.

It is a cyclic number.

It is not a de Polignac number, because 30540331 - 2¹ = 30540329 is a prime.

It is a super-2 number, since 2×30540331² = 1865423635179122, 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 = 30540299 and 30540308.

It is not an unprimeable number, because it can be changed into a prime (30540337) 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, 76536 + ... + 76933.

It is an arithmetic number, because the mean of its divisors is an integer number (7673500).

Almost surely, 2^30540331 is an apocalyptic number.

30540331 is a deficient number, since it is larger than the sum of its proper divisors (153669).

30540331 is a wasteful number, since it uses less digits than its factorization.

30540331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153668.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 30540331 is about 5526.3306994786. The cubic root of 30540331 is about 312.5776438537.

Adding to 30540331 its reverse (13304503), we get a palindrome (43844834).

The spelling of 30540331 in words is "thirty million, five hundred forty thousand, three hundred thirty-one".