1031545040 has 60 divisors (see below), whose sum is σ = 2547777036. Its totient is φ = 388337664.

The previous prime is 1031545033. The next prime is 1031545061. The reversal of 1031545040 is 405451301.

It can be written as a sum of positive squares in 6 ways, for example, as 107584 + 1031437456 = 328^2 + 32116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031544997 and 1031545015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 812 + ... + 45428.

Almost surely, 2^1031545040 is an apocalyptic number.

1031545040 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 1031545040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273888518).

1031545040 is an abundant number, since it is smaller than the sum of its proper divisors (1516231996).

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

1031545040 is a wasteful number, since it uses less digits than its factorization.

1031545040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44664 (or 44641 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1031545040 is about 32117.6748847111. The cubic root of 1031545040 is about 1010.4063456619.

Adding to 1031545040 its reverse (405451301), we get a palindrome (1436996341).

It can be divided in two parts, 10315 and 45040, that added together give a palindrome (55355).

The spelling of 1031545040 in words is "one billion, thirty-one million, five hundred forty-five thousand, forty".