231211451412 has 36 divisors (see below), whose sum is σ = 584498270356. Its totient is φ = 77064272640.

The previous prime is 231211451351. The next prime is 231211451431. The reversal of 231211451412 is 214154112132.

231211451412 is a `hidden beast` number, since 2 + 3 + 121 + 14 + 514 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 128935573776 + 102275877636 = 359076^2 + 319806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205518 + ... + 710394.

Almost surely, 2^231211451412 is an apocalyptic number.

It is an amenable number.

231211451412 is an abundant number, since it is smaller than the sum of its proper divisors (353286818944).

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

231211451412 is a wasteful number, since it uses less digits than its factorization.

231211451412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517608 (or 517603 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

Adding to 231211451412 its reverse (214154112132), we get a palindrome (445365563544).

The spelling of 231211451412 in words is "two hundred thirty-one billion, two hundred eleven million, four hundred fifty-one thousand, four hundred twelve".