1247131731263 has 8 divisors (see below), whose sum is σ = 1365150716496. Its totient is φ = 1129886641600.

The previous prime is 1247131731199. The next prime is 1247131731281. The reversal of 1247131731263 is 3621371317421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1247131731263 - 2⁶ = 1247131731199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1247131731263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247131731863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193470518 + ... + 193476963.

It is an arithmetic number, because the mean of its divisors is an integer number (170643839562).

Almost surely, 2^{1247131731263} is an apocalyptic number.

1247131731263 is a deficient number, since it is larger than the sum of its proper divisors (118018985233).

1247131731263 is a wasteful number, since it uses less digits than its factorization.

1247131731263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386947785.

The product of its digits is 127008, while the sum is 41.

The spelling of 1247131731263 in words is "one trillion, two hundred forty-seven billion, one hundred thirty-one million, seven hundred thirty-one thousand, two hundred sixty-three".