1012131113 has 6 divisors (see below), whose sum is σ = 1177377066. Its totient is φ = 867540912.

The previous prime is 1012131103. The next prime is 1012131143. The reversal of 1012131113 is 3111312101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 991809049 + 20322064 = 31493^2 + 4508^2 .

It is not a de Polignac number, because 1012131113 - 2⁴ = 1012131097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012131103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10327820 + ... + 10327917.

It is an arithmetic number, because the mean of its divisors is an integer number (196229511).

Almost surely, 2^1012131113 is an apocalyptic number.

It is an amenable number.

1012131113 is a deficient number, since it is larger than the sum of its proper divisors (165245953).

1012131113 is an equidigital number, since it uses as much as digits as its factorization.

1012131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20655751 (or 20655744 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1012131113 is about 31814.0081253526. The cubic root of 1012131113 is about 1004.0274621066.

Adding to 1012131113 its reverse (3111312101), we get a palindrome (4123443214).

The spelling of 1012131113 in words is "one billion, twelve million, one hundred thirty-one thousand, one hundred thirteen".