1247131003820 has 48 divisors (see below), whose sum is σ = 2823394825440. Its totient is φ = 459995859456.

The previous prime is 1247131003819. The next prime is 1247131003841. The reversal of 1247131003820 is 283001317421.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2268830 + ... + 2764389.

It is an arithmetic number, because the mean of its divisors is an integer number (58820725530).

Almost surely, 2^{1247131003820} is an apocalyptic number.

1247131003820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247131003820 is an abundant number, since it is smaller than the sum of its proper divisors (1576263821620).

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

1247131003820 is a wasteful number, since it uses less digits than its factorization.

1247131003820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034194 (or 5034192 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 1247131003820 in words is "one trillion, two hundred forty-seven billion, one hundred thirty-one million, three thousand, eight hundred twenty".