1320311402 has 4 divisors (see below), whose sum is σ = 1980467106. Its totient is φ = 660155700.

The previous prime is 1320311401. The next prime is 1320311407. The reversal of 1320311402 is 2041130231.

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

It can be written as a sum of positive squares in only one way, i.e., 1026497521 + 293813881 = 32039^2 + 17141^2 .

It is not an unprimeable number, because it can be changed into a prime (1320311401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330077849 + ... + 330077852.

Almost surely, 2^1320311402 is an apocalyptic number.

1320311402 is a deficient number, since it is larger than the sum of its proper divisors (660155704).

1320311402 is an equidigital number, since it uses as much as digits as its factorization.

1320311402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660155703.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320311402 is about 36336.0895254291. The cubic root of 1320311402 is about 1097.0475653066.

Adding to 1320311402 its reverse (2041130231), we get a palindrome (3361441633).

The spelling of 1320311402 in words is "one billion, three hundred twenty million, three hundred eleven thousand, four hundred two".