231434143213 has 64 divisors (see below), whose sum is σ = 304616632320. Its totient is φ = 170843904000.

The previous prime is 231434143207. The next prime is 231434143319. The reversal of 231434143213 is 312341434132.

It is not a de Polignac number, because 231434143213 - 2⁹ = 231434142701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231434143013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70108663 + ... + 70111963.

It is an arithmetic number, because the mean of its divisors is an integer number (4759634880).

Almost surely, 2^231434143213 is an apocalyptic number.

It is an amenable number.

231434143213 is a deficient number, since it is larger than the sum of its proper divisors (73182489107).

231434143213 is a wasteful number, since it uses less digits than its factorization.

231434143213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238.

The product of its digits is 20736, while the sum is 31.

Adding to 231434143213 its reverse (312341434132), we get a palindrome (543775577345).

The spelling of 231434143213 in words is "two hundred thirty-one billion, four hundred thirty-four million, one hundred forty-three thousand, two hundred thirteen".