1031530540 has 24 divisors (see below), whose sum is σ = 2182031712. Its totient is φ = 409599360.

The previous prime is 1031530531. The next prime is 1031530541. The reversal of 1031530540 is 450351301.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1031530541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185496 + ... + 190975.

It is an arithmetic number, because the mean of its divisors is an integer number (90917988).

Almost surely, 2^1031530540 is an apocalyptic number.

1031530540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031530540 is an abundant number, since it is smaller than the sum of its proper divisors (1150501172).

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

1031530540 is a wasteful number, since it uses less digits than its factorization.

1031530540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376617 (or 376615 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1031530540 is about 32117.4491515126. The cubic root of 1031530540 is about 1010.4016113523.

Adding to 1031530540 its reverse (450351301), we get a palindrome (1481881841).

The spelling of 1031530540 in words is "one billion, thirty-one million, five hundred thirty thousand, five hundred forty".