231284969153784 has 576 divisors, whose sum is σ = 777219300000000. Its totient is φ = 60838461186048.

The previous prime is 231284969153773. The next prime is 231284969153803. The reversal of 231284969153784 is 487351969482132.

231284969153784 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 8 + 4 + 9 + 6 + 9 + 1 + 537 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 70107597367 + ... + 70107600665.

It is an arithmetic number, because the mean of its divisors is an integer number (1349339062500).

Almost surely, 2^{231284969153784} is an apocalyptic number.

231284969153784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231284969153784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388609650000000).

231284969153784 is an abundant number, since it is smaller than the sum of its proper divisors (545934330846216).

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

231284969153784 is a wasteful number, since it uses less digits than its factorization.

231284969153784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252 (or 5232 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 231284969153784 in words is "two hundred thirty-one trillion, two hundred eighty-four billion, nine hundred sixty-nine million, one hundred fifty-three thousand, seven hundred eighty-four".