234331540 has 24 divisors (see below), whose sum is σ = 492385320. Its totient is φ = 93677568.

The previous prime is 234331507. The next prime is 234331583. The reversal of 234331540 is 45133432.

It can be written as a sum of positive squares in 4 ways, for example, as 35070084 + 199261456 = 5922^2 + 14116^2 .

It is a super-2 number, since 2×234331540² = 109822541277543200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59884 + ... + 63676.

It is an arithmetic number, because the mean of its divisors is an integer number (20516055).

Almost surely, 2^234331540 is an apocalyptic number.

234331540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234331540 is an abundant number, since it is smaller than the sum of its proper divisors (258053780).

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

234331540 is a wasteful number, since it uses less digits than its factorization.

234331540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891 (or 6889 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 234331540 is about 15307.8914289330. The cubic root of 234331540 is about 616.5149072218.

Adding to 234331540 its reverse (45133432), we get a palindrome (279464972).

The spelling of 234331540 in words is "two hundred thirty-four million, three hundred thirty-one thousand, five hundred forty".