1031412440 has 64 divisors (see below), whose sum is σ = 2463307200. Its totient is φ = 387330048.

The previous prime is 1031412413. The next prime is 1031412533. The reversal of 1031412440 is 442141301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 309101 + ... + 312419.

It is an arithmetic number, because the mean of its divisors is an integer number (38489175).

Almost surely, 2^1031412440 is an apocalyptic number.

1031412440 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 1031412440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231653600).

1031412440 is an abundant number, since it is smaller than the sum of its proper divisors (1431894760).

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

1031412440 is a wasteful number, since it uses less digits than its factorization.

1031412440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 3800 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1031412440 is about 32115.6105344426. The cubic root of 1031412440 is about 1010.3630495648.

Adding to 1031412440 its reverse (442141301), we get a palindrome (1473553741).

The spelling of 1031412440 in words is "one billion, thirty-one million, four hundred twelve thousand, four hundred forty".