30523440000 has 320 divisors, whose sum is σ = 102524994000. Its totient is φ = 8042496000.

The previous prime is 30523439981. The next prime is 30523440011. The reversal of 30523440000 is 4432503.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21359286 + ... + 21360714.

Almost surely, 2^30523440000 is an apocalyptic number.

30523440000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30523440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51262497000).

30523440000 is an abundant number, since it is smaller than the sum of its proper divisors (72001554000).

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

30523440000 is an equidigital number, since it uses as much as digits as its factorization.

30523440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

Adding to 30523440000 its reverse (4432503), we get a palindrome (30527872503).

The spelling of 30523440000 in words is "thirty billion, five hundred twenty-three million, four hundred forty thousand".