30211343440 has 40 divisors (see below), whose sum is σ = 70437098880. Its totient is φ = 12050864256.

The previous prime is 30211343429. The next prime is 30211343527. The reversal of 30211343440 is 4434311203.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 497244 + ... + 554683.

It is an arithmetic number, because the mean of its divisors is an integer number (1760927472).

Almost surely, 2^30211343440 is an apocalyptic number.

It is an amenable number.

30211343440 is an abundant number, since it is smaller than the sum of its proper divisors (40225755440).

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

30211343440 is a wasteful number, since it uses less digits than its factorization.

30211343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052299 (or 1052293 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 30211343440 its reverse (4434311203), we get a palindrome (34645654643).

The spelling of 30211343440 in words is "thirty billion, two hundred eleven million, three hundred forty-three thousand, four hundred forty".