1020531530 has 8 divisors (see below), whose sum is σ = 1836956772. Its totient is φ = 408212608.

The previous prime is 1020531517. The next prime is 1020531541. The reversal of 1020531530 is 351350201.

It can be written as a sum of positive squares in 2 ways, for example, as 913429729 + 107101801 = 30223^2 + 10349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 51026567 + ... + 51026586.

Almost surely, 2^1020531530 is an apocalyptic number.

1020531530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020531530 is a deficient number, since it is larger than the sum of its proper divisors (816425242).

1020531530 is a wasteful number, since it uses less digits than its factorization.

1020531530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102053160.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1020531530 is about 31945.7591864711. The cubic root of 1020531530 is about 1006.7975321928.

Adding to 1020531530 its reverse (351350201), we get a palindrome (1371881731).

The spelling of 1020531530 in words is "one billion, twenty million, five hundred thirty-one thousand, five hundred thirty".