34231440 has 160 divisors (see below), whose sum is σ = 113135616. Its totient is φ = 8547840.

The previous prime is 34231427. The next prime is 34231451. The reversal of 34231440 is 4413243.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319867 + ... + 319973.

Almost surely, 2^34231440 is an apocalyptic number.

34231440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34231440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56567808).

34231440 is an abundant number, since it is smaller than the sum of its proper divisors (78904176).

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

34231440 is a wasteful number, since it uses less digits than its factorization.

34231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 34231440 is about 5850.7640526687. The cubic root of 34231440 is about 324.6945927787.

Adding to 34231440 its reverse (4413243), we get a palindrome (38644683).

The spelling of 34231440 in words is "thirty-four million, two hundred thirty-one thousand, four hundred forty".