231023724465409 has 4 divisors (see below), whose sum is σ = 231023945972016. Its totient is φ = 231023502958804.

The previous prime is 231023724465371. The next prime is 231023724465493. The reversal of 231023724465409 is 904564427320132.

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 not a de Polignac number, because 231023724465409 - 2¹¹ = 231023724463361 is a prime.

It is a super-3 number, since 3×231023724465409³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231023724468409) 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, 109181419 + ... + 111277264.

It is an arithmetic number, because the mean of its divisors is an integer number (57755986493004).

Almost surely, 2^{231023724465409} is an apocalyptic number.

It is an amenable number.

231023724465409 is a deficient number, since it is larger than the sum of its proper divisors (221506607).

231023724465409 is a wasteful number, since it uses less digits than its factorization.

231023724465409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221506606.

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 231023724465409 in words is "two hundred thirty-one trillion, twenty-three billion, seven hundred twenty-four million, four hundred sixty-five thousand, four hundred nine".