243431426431 has 2 divisors, whose sum is σ = 243431426432. Its totient is φ = 243431426430.

The previous prime is 243431426401. The next prime is 243431426461. The reversal of 243431426431 is 134624134342.

It is a balanced prime because it is at equal distance from previous prime (243431426401) and next prime (243431426461).

It is a cyclic number.

It is not a de Polignac number, because 243431426431 - 2³⁷ = 105992472959 is a prime.

It is a super-2 number, since 2×243431426431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243431426401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121715713215 + 121715713216.

It is an arithmetic number, because the mean of its divisors is an integer number (121715713216).

Almost surely, 2^243431426431 is an apocalyptic number.

243431426431 is a deficient number, since it is larger than the sum of its proper divisors (1).

243431426431 is an equidigital number, since it uses as much as digits as its factorization.

243431426431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 37.

The spelling of 243431426431 in words is "two hundred forty-three billion, four hundred thirty-one million, four hundred twenty-six thousand, four hundred thirty-one".