1012531513 has 4 divisors (see below), whose sum is σ = 1157178880. Its totient is φ = 867884148.

The previous prime is 1012531483. The next prime is 1012531519. The reversal of 1012531513 is 3151352101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012531513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012531519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72323673 + ... + 72323686.

It is an arithmetic number, because the mean of its divisors is an integer number (289294720).

Almost surely, 2^1012531513 is an apocalyptic number.

It is an amenable number.

1012531513 is a deficient number, since it is larger than the sum of its proper divisors (144647367).

1012531513 is an equidigital number, since it uses as much as digits as its factorization.

1012531513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144647366.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1012531513 is about 31820.3003285638. The cubic root of 1012531513 is about 1004.1598427142.

Adding to 1012531513 its reverse (3151352101), we get a palindrome (4163883614).

The spelling of 1012531513 in words is "one billion, twelve million, five hundred thirty-one thousand, five hundred thirteen".