231234545413 has 4 divisors (see below), whose sum is σ = 231240517888. Its totient is φ = 231228572940.

The previous prime is 231234545407. The next prime is 231234545431. The reversal of 231234545413 is 314545432132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231234545413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231234545453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927781 + ... + 3005722.

It is an arithmetic number, because the mean of its divisors is an integer number (57810129472).

Almost surely, 2^231234545413 is an apocalyptic number.

It is an amenable number.

231234545413 is a deficient number, since it is larger than the sum of its proper divisors (5972475).

231234545413 is an equidigital number, since it uses as much as digits as its factorization.

231234545413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972474.

The product of its digits is 172800, while the sum is 37.

Adding to 231234545413 its reverse (314545432132), we get a palindrome (545779977545).

The spelling of 231234545413 in words is "two hundred thirty-one billion, two hundred thirty-four million, five hundred forty-five thousand, four hundred thirteen".