1311312002 has 32 divisors (see below), whose sum is σ = 2640968064. Its totient is φ = 471600000.

The previous prime is 1311311977. The next prime is 1311312043. The reversal of 1311312002 is 2002131131.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325499 + ... + 329502.

It is an arithmetic number, because the mean of its divisors is an integer number (82530252).

Almost surely, 2^1311312002 is an apocalyptic number.

1311312002 is an abundant number, since it is smaller than the sum of its proper divisors (1329656062).

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

1311312002 is a wasteful number, since it uses less digits than its factorization.

1311312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655034.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1311312002 is about 36212.0422235477. The cubic root of 1311312002 is about 1094.5493449375.

Adding to 1311312002 its reverse (2002131131), we get a palindrome (3313443133).

It can be divided in two parts, 1311 and 312002, that added together give a palindrome (313313).

The spelling of 1311312002 in words is "one billion, three hundred eleven million, three hundred twelve thousand, two".