30531345 has 32 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 14509824.

The previous prime is 30531317. The next prime is 30531353. The reversal of 30531345 is 54313503.

It is a happy number.

It is not a de Polignac number, because 30531345 - 2⁸ = 30531089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2956 + ... + 8354.

It is an arithmetic number, because the mean of its divisors is an integer number (1701000).

Almost surely, 2^30531345 is an apocalyptic number.

It is an amenable number.

30531345 is a deficient number, since it is larger than the sum of its proper divisors (23900655).

30531345 is a wasteful number, since it uses less digits than its factorization.

30531345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 30531345 is about 5525.5176228115. The cubic root of 30531345 is about 312.5469838690.

Adding to 30531345 its reverse (54313503), we get a palindrome (84844848).

It can be divided in two parts, 30531 and 345, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 30531345 in words is "thirty million, five hundred thirty-one thousand, three hundred forty-five".