1311100002 has 24 divisors (see below), whose sum is σ = 2879633484. Its totient is φ = 431046144.

The previous prime is 1311099991. The next prime is 1311100013. The reversal of 1311100002 is 2000011131.

It is an interprime number because it is at equal distance from previous prime (1311099991) and next prime (1311100013).

It can be written as a sum of positive squares in 2 ways, for example, as 1250400321 + 60699681 = 35361^2 + 7791^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497583 + ... + 500210.

Almost surely, 2^1311100002 is an apocalyptic number.

1311100002 is an abundant number, since it is smaller than the sum of its proper divisors (1568533482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311100002 is a wasteful number, since it uses less digits than its factorization.

1311100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997874 (or 997871 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1311100002 is about 36209.1149021900. The cubic root of 1311100002 is about 1094.4903564418.

Adding to 1311100002 its reverse (2000011131), we get a palindrome (3311111133).

The spelling of 1311100002 in words is "one billion, three hundred eleven million, one hundred thousand, two".