1030321513 has 24 divisors (see below), whose sum is σ = 1149487416. Its totient is φ = 922521600.

The previous prime is 1030321469. The next prime is 1030321517. The reversal of 1030321513 is 3151230301.

It can be written as a sum of positive squares in 12 ways, for example, as 921911769 + 108409744 = 30363^2 + 10412^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1030321513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030321517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1669581 + ... + 1670197.

It is an arithmetic number, because the mean of its divisors is an integer number (47895309).

Almost surely, 2^1030321513 is an apocalyptic number.

1030321513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1030321513 is a deficient number, since it is larger than the sum of its proper divisors (119165903).

1030321513 is a wasteful number, since it uses less digits than its factorization.

1030321513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1030321513 is about 32098.6216682274. The cubic root of 1030321513 is about 1010.0067028931.

Adding to 1030321513 its reverse (3151230301), we get a palindrome (4181551814).

The spelling of 1030321513 in words is "one billion, thirty million, three hundred twenty-one thousand, five hundred thirteen".