247231871040 has 224 divisors, whose sum is σ = 978653205504. Its totient is φ = 51372840960.

The previous prime is 247231870997. The next prime is 247231871053. The reversal of 247231871040 is 40178132742.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×247231871040² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247231871040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1598374 + ... + 1746213.

Almost surely, 2^247231871040 is an apocalyptic number.

247231871040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247231871040 is an abundant number, since it is smaller than the sum of its proper divisors (731421334464).

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

247231871040 is a wasteful number, since it uses less digits than its factorization.

247231871040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344625 (or 3344615 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 247231871040 in words is "two hundred forty-seven billion, two hundred thirty-one million, eight hundred seventy-one thousand, forty".