231545434303512 has 512 divisors, whose sum is σ = 778088892672000. Its totient is φ = 62322980290560.

The previous prime is 231545434303507. The next prime is 231545434303571. The reversal of 231545434303512 is 215303434545132.

231545434303512 is a `hidden beast` number, since 2 + 3 + 1 + 54 + 5 + 43 + 43 + 0 + 3 + 512 = 666.

It is a super-2 number, since 2×231545434303512² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15707572462 + ... + 15707587202.

It is an arithmetic number, because the mean of its divisors is an integer number (1519704868500).

Almost surely, 2^{231545434303512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231545434303512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389044446336000).

231545434303512 is an abundant number, since it is smaller than the sum of its proper divisors (546543458368488).

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

231545434303512 is a wasteful number, since it uses less digits than its factorization.

231545434303512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17808 (or 17798 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

Adding to 231545434303512 its reverse (215303434545132), we get a palindrome (446848868848644).

The spelling of 231545434303512 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty-four million, three hundred three thousand, five hundred twelve".