1301333331 has 4 divisors (see below), whose sum is σ = 1735111112. Its totient is φ = 867555552.

The previous prime is 1301333303. The next prime is 1301333377. The reversal of 1301333331 is 1333331031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333331031 = 3 ⋅444443677.

It is not a de Polignac number, because 1301333331 - 2⁷ = 1301333203 is a prime.

It is a super-2 number, since 2×1301333331² = 3386936876743111122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301333298 and 1301333307.

It is not an unprimeable number, because it can be changed into a prime (1301133331) 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, 216888886 + ... + 216888891.

It is an arithmetic number, because the mean of its divisors is an integer number (433777778).

Almost surely, 2^1301333331 is an apocalyptic number.

1301333331 is a deficient number, since it is larger than the sum of its proper divisors (433777781).

1301333331 is an equidigital number, since it uses as much as digits as its factorization.

1301333331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433777780.

The product of its (nonzero) digits is 729, while the sum is 21.

The square root of 1301333331 is about 36073.9979902422. The cubic root of 1301333331 is about 1091.7658806888.

Adding to 1301333331 its reverse (1333331031), we get a palindrome (2634664362).

The spelling of 1301333331 in words is "one billion, three hundred one million, three hundred thirty-three thousand, three hundred thirty-one".