31200030344032 has 96 divisors (see below), whose sum is σ = 68572606886784. Its totient is φ = 13850991974400.

The previous prime is 31200030344027. The next prime is 31200030344069. The reversal of 31200030344032 is 23044303000213.

It is a junction number, because it is equal to n+sod(n) for n = 31200030343988 and 31200030344006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225411807 + ... + 225550177.

It is an arithmetic number, because the mean of its divisors is an integer number (714297988404).

Almost surely, 2^{31200030344032} is an apocalyptic number.

31200030344032 is a gapful number since it is divisible by the number (32) 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 31200030344032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34286303443392).

31200030344032 is an abundant number, since it is smaller than the sum of its proper divisors (37372576542752).

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

31200030344032 is a wasteful number, since it uses less digits than its factorization.

31200030344032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153332 (or 153324 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31200030344032 its reverse (23044303000213), we get a palindrome (54244333344245).

The spelling of 31200030344032 in words is "thirty-one trillion, two hundred billion, thirty million, three hundred forty-four thousand, thirty-two".