320135311402 has 8 divisors (see below), whose sum is σ = 508450200516. Its totient is φ = 150651911232.

The previous prime is 320135311387. The next prime is 320135311411. The reversal of 320135311402 is 204113531023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 310796215081 + 9339096321 = 557491^2 + 96639^2 .

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

It is a super-2 number, since 2×320135311402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4707872193 + ... + 4707872260.

Almost surely, 2^320135311402 is an apocalyptic number.

320135311402 is a deficient number, since it is larger than the sum of its proper divisors (188314889114).

320135311402 is a wasteful number, since it uses less digits than its factorization.

320135311402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415744472.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 320135311402 its reverse (204113531023), we get a palindrome (524248842425).

The spelling of 320135311402 in words is "three hundred twenty billion, one hundred thirty-five million, three hundred eleven thousand, four hundred two".