1031528380 has 48 divisors (see below), whose sum is σ = 2393375040. Its totient is φ = 371452928.

The previous prime is 1031528371. The next prime is 1031528387. The reversal of 1031528380 is 838251301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031528387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58135 + ... + 73774.

It is an arithmetic number, because the mean of its divisors is an integer number (49861980).

Almost surely, 2^1031528380 is an apocalyptic number.

1031528380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031528380 is an abundant number, since it is smaller than the sum of its proper divisors (1361846660).

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

1031528380 is a wasteful number, since it uses less digits than its factorization.

1031528380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131958 (or 131956 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1031528380 is about 32117.4155249142. The cubic root of 1031528380 is about 1010.4009060996.

Adding to 1031528380 its reverse (838251301), we get a palindrome (1869779681).

The spelling of 1031528380 in words is "one billion, thirty-one million, five hundred twenty-eight thousand, three hundred eighty".