247993982731 has 8 divisors (see below), whose sum is σ = 270547846128. Its totient is φ = 225441612000.

The previous prime is 247993982713. The next prime is 247993982783. The reversal of 247993982731 is 137289399742.

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

It is not a de Polignac number, because 247993982731 - 2¹³ = 247993974539 is a prime.

It is a super-2 number, since 2×247993982731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247993982791) 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, 10440 + ... + 704341.

It is an arithmetic number, because the mean of its divisors is an integer number (33818480766).

Almost surely, 2^247993982731 is an apocalyptic number.

247993982731 is a deficient number, since it is larger than the sum of its proper divisors (22553863397).

247993982731 is a wasteful number, since it uses less digits than its factorization.

247993982731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746333.

The product of its digits is 41150592, while the sum is 64.

The spelling of 247993982731 in words is "two hundred forty-seven billion, nine hundred ninety-three million, nine hundred eighty-two thousand, seven hundred thirty-one".