31303200012030 has 192 divisors, whose sum is σ = 89232404414400. Its totient is φ = 7578347212800.

The previous prime is 31303200012023. The next prime is 31303200012101. The reversal of 31303200012030 is 3021000230313.

31303200012030 is a `hidden beast` number, since 313 + 0 + 3 + 200 + 0 + 120 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31303200011994 and 31303200012012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46297236 + ... + 46968504.

It is an arithmetic number, because the mean of its divisors is an integer number (464752106325).

Almost surely, 2^{31303200012030} is an apocalyptic number.

31303200012030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31303200012030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44616202207200).

31303200012030 is an abundant number, since it is smaller than the sum of its proper divisors (57929204402370).

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

31303200012030 is a wasteful number, since it uses less digits than its factorization.

31303200012030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672379 (or 672376 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31303200012030 its reverse (3021000230313), we get a palindrome (34324200242343).

The spelling of 31303200012030 in words is "thirty-one trillion, three hundred three billion, two hundred million, twelve thousand, thirty".