234144321440 has 48 divisors (see below), whose sum is σ = 553240239048. Its totient is φ = 93645152256.

The previous prime is 234144321421. The next prime is 234144321449. The reversal of 234144321440 is 44123441432.

It can be written as a sum of positive squares in 4 ways, for example, as 233007013264 + 1137308176 = 482708^2 + 33724^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 234144321397 and 234144321406.

It is not an unprimeable number, because it can be changed into a prime (234144321449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146104 + ... + 1334856.

Almost surely, 2^234144321440 is an apocalyptic number.

234144321440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234144321440 is an abundant number, since it is smaller than the sum of its proper divisors (319095917608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234144321440 is a wasteful number, since it uses less digits than its factorization.

234144321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196521 (or 196513 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 234144321440 its reverse (44123441432), we get a palindrome (278267762872).

The spelling of 234144321440 in words is "two hundred thirty-four billion, one hundred forty-four million, three hundred twenty-one thousand, four hundred forty".