312230030531540 has 192 divisors, whose sum is σ = 754951321313280. Its totient is φ = 107275102848000.

The previous prime is 312230030531513. The next prime is 312230030531581. The reversal of 312230030531540 is 45135030032213.

It is a junction number, because it is equal to n+sod(n) for n = 312230030531497 and 312230030531506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3113811605 + ... + 3113911875.

It is an arithmetic number, because the mean of its divisors is an integer number (3932038131840).

Almost surely, 2^{312230030531540} 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 312230030531540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377475660656640).

312230030531540 is an abundant number, since it is smaller than the sum of its proper divisors (442721290781740).

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

312230030531540 is a wasteful number, since it uses less digits than its factorization.

312230030531540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102294 (or 102292 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 312230030531540 its reverse (45135030032213), we get a palindrome (357365060563753).

The spelling of 312230030531540 in words is "three hundred twelve trillion, two hundred thirty billion, thirty million, five hundred thirty-one thousand, five hundred forty".