1310021011 has 4 divisors (see below), whose sum is σ = 1410791872. Its totient is φ = 1209250152.

The previous prime is 1310020961. The next prime is 1310021017. The reversal of 1310021011 is 1101200131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1310021011 - 2¹⁵ = 1309988243 is a prime.

It is a super-2 number, since 2×1310021011² = 3432310098522924242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310021017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50385411 + ... + 50385436.

It is an arithmetic number, because the mean of its divisors is an integer number (352697968).

Almost surely, 2^1310021011 is an apocalyptic number.

1310021011 is a deficient number, since it is larger than the sum of its proper divisors (100770861).

1310021011 is a wasteful number, since it uses less digits than its factorization.

1310021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100770860.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1310021011 is about 36194.2123964592. The cubic root of 1310021011 is about 1094.1900311806.

Adding to 1310021011 its reverse (1101200131), we get a palindrome (2411221142).

The spelling of 1310021011 in words is "one billion, three hundred ten million, twenty-one thousand, eleven".