1031525040 has 320 divisors, whose sum is σ = 3995744256. Its totient is φ = 214327296.

The previous prime is 1031525039. The next prime is 1031525051. The reversal of 1031525040 is 405251301.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1031524998 and 1031525016.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1593997 + ... + 1594643.

Almost surely, 2^1031525040 is an apocalyptic number.

1031525040 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 1031525040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1997872128).

1031525040 is an abundant number, since it is smaller than the sum of its proper divisors (2964219216).

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

1031525040 is a wasteful number, since it uses less digits than its factorization.

1031525040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1031525040 is about 32117.3635281603. The cubic root of 1031525040 is about 1010.3998155681.

Adding to 1031525040 its reverse (405251301), we get a palindrome (1436776341).

The spelling of 1031525040 in words is "one billion, thirty-one million, five hundred twenty-five thousand, forty".