1021531130 has 8 divisors (see below), whose sum is σ = 1838756052. Its totient is φ = 408612448.

The previous prime is 1021531129. The next prime is 1021531163. The reversal of 1021531130 is 311351201.

It can be written as a sum of positive squares in 2 ways, for example, as 1011939721 + 9591409 = 31811^2 + 3097^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1021531099 and 1021531108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51076547 + ... + 51076566.

Almost surely, 2^1021531130 is an apocalyptic number.

1021531130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021531130 is a deficient number, since it is larger than the sum of its proper divisors (817224922).

1021531130 is a wasteful number, since it uses less digits than its factorization.

1021531130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102153120.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1021531130 is about 31961.4006263806. The cubic root of 1021531130 is about 1007.1261408240.

Adding to 1021531130 its reverse (311351201), we get a palindrome (1332882331).

The spelling of 1021531130 in words is "one billion, twenty-one million, five hundred thirty-one thousand, one hundred thirty".