1340231040 has 192 divisors, whose sum is σ = 4900577760. Its totient is φ = 336347136.

The previous prime is 1340231033. The next prime is 1340231077. The reversal of 1340231040 is 401320431.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91077 + ... + 104763.

Almost surely, 2^1340231040 is an apocalyptic number.

1340231040 is a gapful number since it is divisible by the number (10) 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 1340231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2450288880).

1340231040 is an abundant number, since it is smaller than the sum of its proper divisors (3560346720).

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

1340231040 is a wasteful number, since it uses less digits than its factorization.

1340231040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13729 (or 13714 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1340231040 is about 36609.1660653449. The cubic root of 1340231040 is about 1102.5371298832.

Adding to 1340231040 its reverse (401320431), we get a palindrome (1741551471).

The spelling of 1340231040 in words is "one billion, three hundred forty million, two hundred thirty-one thousand, forty".