1311030402 has 24 divisors (see below), whose sum is σ = 2882101488. Its totient is φ = 397281720.

The previous prime is 1311030377. The next prime is 1311030403. The reversal of 1311030402 is 2040301131.

It is not an unprimeable number, because it can be changed into a prime (1311030403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 902188 + ... + 903639.

It is an arithmetic number, because the mean of its divisors is an integer number (120087562).

Almost surely, 2^1311030402 is an apocalyptic number.

1311030402 is an abundant number, since it is smaller than the sum of its proper divisors (1571071086).

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

1311030402 is a wasteful number, since it uses less digits than its factorization.

1311030402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805854 (or 1805843 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1311030402 is about 36208.1538054621. The cubic root of 1311030402 is about 1094.4709890209.

Adding to 1311030402 its reverse (2040301131), we get a palindrome (3351331533).

The spelling of 1311030402 in words is "one billion, three hundred eleven million, thirty thousand, four hundred two".