31230000681600 has 384 divisors, whose sum is σ = 123745947609600. Its totient is φ = 6762586337280.

The previous prime is 31230000681569. The next prime is 31230000681613. The reversal of 31230000681600 is 618600003213.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 47 ways as a sum of consecutive naturals, for example, 10952994 + ... + 13506593.

It is an arithmetic number, because the mean of its divisors is an integer number (322255071900).

Almost surely, 2^{31230000681600} is an apocalyptic number.

31230000681600 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31230000681600 is an abundant number, since it is smaller than the sum of its proper divisors (92515946928000).

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

31230000681600 is a wasteful number, since it uses less digits than its factorization.

31230000681600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24459640 (or 24459623 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 31230000681600 its reverse (618600003213), we get a palindrome (31848600684813).

The spelling of 31230000681600 in words is "thirty-one trillion, two hundred thirty billion, six hundred eighty-one thousand, six hundred".