231212044134 has 16 divisors (see below), whose sum is σ = 513804542640. Its totient is φ = 77070681360.

The previous prime is 231212044121. The next prime is 231212044153. The reversal of 231212044134 is 431440212132.

231212044134 is a `hidden beast` number, since 2 + 3 + 1 + 212 + 0 + 441 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 231212044098 and 231212044107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140852207 + ... + 2140852314.

It is an arithmetic number, because the mean of its divisors is an integer number (32112783915).

Almost surely, 2^231212044134 is an apocalyptic number.

231212044134 is an abundant number, since it is smaller than the sum of its proper divisors (282592498506).

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

231212044134 is a wasteful number, since it uses less digits than its factorization.

231212044134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281704532 (or 4281704526 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 231212044134 its reverse (431440212132), we get a palindrome (662652256266).

The spelling of 231212044134 in words is "two hundred thirty-one billion, two hundred twelve million, forty-four thousand, one hundred thirty-four".