231543401205 has 8 divisors (see below), whose sum is σ = 370469441952. Its totient is φ = 123489813968.

The previous prime is 231543401093. The next prime is 231543401213. The reversal of 231543401205 is 502104345132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231543401205 - 2¹² = 231543397109 is a prime.

It is a super-2 number, since 2×231543401205² (a number of 24 digits) contains 22 as substring.

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, 7718113359 + ... + 7718113388.

It is an arithmetic number, because the mean of its divisors is an integer number (46308680244).

Almost surely, 2^231543401205 is an apocalyptic number.

It is an amenable number.

231543401205 is a deficient number, since it is larger than the sum of its proper divisors (138926040747).

231543401205 is a wasteful number, since it uses less digits than its factorization.

231543401205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15436226755.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 231543401205 its reverse (502104345132), we get a palindrome (733647746337).

The spelling of 231543401205 in words is "two hundred thirty-one billion, five hundred forty-three million, four hundred one thousand, two hundred five".