1311401402 has 8 divisors (see below), whose sum is σ = 2034933300. Its totient is φ = 633090304.

The previous prime is 1311401393. The next prime is 1311401407. The reversal of 1311401402 is 2041041131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1224930001 + 86471401 = 34999^2 + 9299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1311401407) 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, 11305127 + ... + 11305242.

Almost surely, 2^1311401402 is an apocalyptic number.

1311401402 is a deficient number, since it is larger than the sum of its proper divisors (723531898).

1311401402 is a wasteful number, since it uses less digits than its factorization.

1311401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22610400.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1311401402 is about 36213.2765985073. The cubic root of 1311401402 is about 1094.5742183690.

Adding to 1311401402 its reverse (2041041131), we get a palindrome (3352442533).

The spelling of 1311401402 in words is "one billion, three hundred eleven million, four hundred one thousand, four hundred two".