30323131220432 has 160 divisors (see below), whose sum is σ = 63713807055360. Its totient is φ = 13943259095040.

The previous prime is 30323131220429. The next prime is 30323131220479. The reversal of 30323131220432 is 23402213132303.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30323131220395 and 30323131220404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1406507669 + ... + 1406529227.

It is an arithmetic number, because the mean of its divisors is an integer number (398211294096).

Almost surely, 2^{30323131220432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30323131220432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31856903527680).

30323131220432 is an abundant number, since it is smaller than the sum of its proper divisors (33390675834928).

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

30323131220432 is a wasteful number, since it uses less digits than its factorization.

30323131220432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22981 (or 22975 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 30323131220432 its reverse (23402213132303), we get a palindrome (53725344352735).

The spelling of 30323131220432 in words is "thirty trillion, three hundred twenty-three billion, one hundred thirty-one million, two hundred twenty thousand, four hundred thirty-two".