43531415231312 has 10 divisors (see below), whose sum is σ = 84342117010698. Its totient is φ = 21765707615648.

The previous prime is 43531415231309. The next prime is 43531415231347. The reversal of 43531415231312 is 21313251413534.

It is a happy number.

43531415231312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 41973501860416 + 1557913370896 = 6478696^2 + 1248164^2 .

It is a super-2 number, since 2×43531415231312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360356725963 + ... + 1360356725994.

Almost surely, 2^{43531415231312} is an apocalyptic number.

It is an amenable number.

43531415231312 is a deficient number, since it is larger than the sum of its proper divisors (40810701779386).

43531415231312 is a wasteful number, since it uses less digits than its factorization.

43531415231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720713451965 (or 2720713451959 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

Adding to 43531415231312 its reverse (21313251413534), we get a palindrome (64844666644846).

The spelling of 43531415231312 in words is "forty-three trillion, five hundred thirty-one billion, four hundred fifteen million, two hundred thirty-one thousand, three hundred twelve".