243611230431 has 16 divisors (see below), whose sum is σ = 328108644864. Its totient is φ = 160761999264.

The previous prime is 243611230381. The next prime is 243611230451. The reversal of 243611230431 is 134032116342.

It is not a de Polignac number, because 243611230431 - 2⁶ = 243611230367 is a prime.

It is a super-2 number, since 2×243611230431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243611230451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561070 + ... + 895556.

It is an arithmetic number, because the mean of its divisors is an integer number (20506790304).

Almost surely, 2^243611230431 is an apocalyptic number.

243611230431 is a deficient number, since it is larger than the sum of its proper divisors (84497414433).

243611230431 is a wasteful number, since it uses less digits than its factorization.

243611230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336950.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 243611230431 its reverse (134032116342), we get a palindrome (377643346773).

The spelling of 243611230431 in words is "two hundred forty-three billion, six hundred eleven million, two hundred thirty thousand, four hundred thirty-one".