30211140 has 48 divisors (see below), whose sum is σ = 89046720. Its totient is φ = 7632000.

The previous prime is 30211117. The next prime is 30211147. The reversal of 30211140 is 4111203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (30211147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12111 + ... + 14390.

It is an arithmetic number, because the mean of its divisors is an integer number (1855140).

Almost surely, 2^30211140 is an apocalyptic number.

30211140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30211140 is an abundant number, since it is smaller than the sum of its proper divisors (58835580).

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

30211140 is a wasteful number, since it uses less digits than its factorization.

30211140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26532 (or 26530 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30211140 is about 5496.4661374378. The cubic root of 30211140 is about 311.4505038642.

Adding to 30211140 its reverse (4111203), we get a palindrome (34322343).

The spelling of 30211140 in words is "thirty million, two hundred eleven thousand, one hundred forty".