30212103440 has 80 divisors (see below), whose sum is σ = 70780992048. Its totient is φ = 11992670208.

The previous prime is 30212103421. The next prime is 30212103457. The reversal of 30212103440 is 4430121203.

It can be written as a sum of positive squares in 8 ways, for example, as 16944749584 + 13267353856 = 130172^2 + 115184^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5906324 + ... + 5911436.

Almost surely, 2^30212103440 is an apocalyptic number.

It is an amenable number.

30212103440 is an abundant number, since it is smaller than the sum of its proper divisors (40568888608).

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

30212103440 is a wasteful number, since it uses less digits than its factorization.

30212103440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676 (or 5670 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30212103440 its reverse (4430121203), we get a palindrome (34642224643).

The spelling of 30212103440 in words is "thirty billion, two hundred twelve million, one hundred three thousand, four hundred forty".