243465144531 has 32 divisors (see below), whose sum is σ = 378758400000. Its totient is φ = 139052168640.

The previous prime is 243465144521. The next prime is 243465144551. The reversal of 243465144531 is 135441564342.

It is not a de Polignac number, because 243465144531 - 2⁹ = 243465144019 is a prime.

It is a super-2 number, since 2×243465144531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243465144521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1997791 + ... + 2116151.

It is an arithmetic number, because the mean of its divisors is an integer number (11836200000).

Almost surely, 2^243465144531 is an apocalyptic number.

243465144531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243465144531 is a deficient number, since it is larger than the sum of its proper divisors (135293255469).

243465144531 is a wasteful number, since it uses less digits than its factorization.

243465144531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120384 (or 120370 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The spelling of 243465144531 in words is "two hundred forty-three billion, four hundred sixty-five million, one hundred forty-four thousand, five hundred thirty-one".