1002012113 has 8 divisors (see below), whose sum is σ = 1062207432. Its totient is φ = 941956096.

The previous prime is 1002012071. The next prime is 1002012131. The reversal of 1002012113 is 3112102001.

It can be written as a sum of positive squares in 4 ways, for example, as 609694864 + 392317249 = 24692^2 + 19807^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002012113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002012094 and 1002012103.

It is not an unprimeable number, because it can be changed into a prime (1002012013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19820 + ... + 48957.

It is an arithmetic number, because the mean of its divisors is an integer number (132775929).

Almost surely, 2^1002012113 is an apocalyptic number.

It is an amenable number.

1002012113 is a deficient number, since it is larger than the sum of its proper divisors (60195319).

1002012113 is an equidigital number, since it uses as much as digits as its factorization.

1002012113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69651.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1002012113 is about 31654.5749142205. The cubic root of 1002012113 is about 1000.6702549912.

Adding to 1002012113 its reverse (3112102001), we get a palindrome (4114114114).

The spelling of 1002012113 in words is "one billion, two million, twelve thousand, one hundred thirteen".