1031987240 has 16 divisors (see below), whose sum is σ = 2321971380. Its totient is φ = 412794880.

The previous prime is 1031987233. The next prime is 1031987251. The reversal of 1031987240 is 427891301.

It can be written as a sum of positive squares in 2 ways, for example, as 1030281604 + 1705636 = 32098^2 + 1306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1031987240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12899801 + ... + 12899880.

Almost surely, 2^1031987240 is an apocalyptic number.

1031987240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031987240 is an abundant number, since it is smaller than the sum of its proper divisors (1289984140).

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

1031987240 is a wasteful number, since it uses less digits than its factorization.

1031987240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25799692 (or 25799688 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1031987240 is about 32124.5582070789. The cubic root of 1031987240 is about 1010.5507044762.

The spelling of 1031987240 in words is "one billion, thirty-one million, nine hundred eighty-seven thousand, two hundred forty".