30531340 has 24 divisors (see below), whose sum is σ = 73275552. Its totient is φ = 10467840.

The previous prime is 30531317. The next prime is 30531353. The reversal of 30531340 is 4313503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108901 + ... + 109180.

It is an arithmetic number, because the mean of its divisors is an integer number (3053148).

Almost surely, 2^30531340 is an apocalyptic number.

It is an amenable number.

30531340 is an abundant number, since it is smaller than the sum of its proper divisors (42744212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30531340 is a wasteful number, since it uses less digits than its factorization.

30531340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218097 (or 218095 counting only the distinct ones).

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

The square root of 30531340 is about 5525.5171703651. The cubic root of 30531340 is about 312.5469668075.

Adding to 30531340 its reverse (4313503), we get a palindrome (34844843).

The spelling of 30531340 in words is "thirty million, five hundred thirty-one thousand, three hundred forty".