243415306431 has 24 divisors (see below), whose sum is σ = 391724446464. Its totient is φ = 144385607760.

The previous prime is 243415306411. The next prime is 243415306471. The reversal of 243415306431 is 134603514342.

243415306431 is a `hidden beast` number, since 2 + 4 + 3 + 4 + 1 + 5 + 3 + 0 + 643 + 1 = 666.

It is not a de Polignac number, because 243415306431 - 2²² = 243411112127 is a prime.

It is a super-2 number, since 2×243415306431² (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 (243415306411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26152161 + ... + 26161466.

It is an arithmetic number, because the mean of its divisors is an integer number (16321851936).

Almost surely, 2^243415306431 is an apocalyptic number.

243415306431 is a deficient number, since it is larger than the sum of its proper divisors (148309140033).

243415306431 is a wasteful number, since it uses less digits than its factorization.

243415306431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52313691 (or 52313688 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 243415306431 in words is "two hundred forty-three billion, four hundred fifteen million, three hundred six thousand, four hundred thirty-one".