1031144642647 has 8 divisors (see below), whose sum is σ = 1187052853536. Its totient is φ = 877386890112.

The previous prime is 1031144642623. The next prime is 1031144642659. The reversal of 1031144642647 is 7462464411301.

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 1031144642647 - 2²⁷ = 1031010424919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031144642447) 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, 537613558 + ... + 537615475.

It is an arithmetic number, because the mean of its divisors is an integer number (148381606692).

Almost surely, 2^{1031144642647} is an apocalyptic number.

1031144642647 is a deficient number, since it is larger than the sum of its proper divisors (155908210889).

1031144642647 is a wasteful number, since it uses less digits than its factorization.

1031144642647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075229177.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 1031144642647 in words is "one trillion, thirty-one billion, one hundred forty-four million, six hundred forty-two thousand, six hundred forty-seven".