1301311331 has 4 divisors (see below), whose sum is σ = 1302147600. Its totient is φ = 1300475064.

The previous prime is 1301311313. The next prime is 1301311337. The reversal of 1301311331 is 1331131031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1331131031 = 1033 ⋅1288607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301311331 is a prime.

It is a super-2 number, since 2×1301311331² = 3386822360377983122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301311337) 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, 415796 + ... + 418913.

It is an arithmetic number, because the mean of its divisors is an integer number (325536900).

Almost surely, 2^1301311331 is an apocalyptic number.

1301311331 is a deficient number, since it is larger than the sum of its proper divisors (836269).

1301311331 is an equidigital number, since it uses as much as digits as its factorization.

1301311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836268.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1301311331 is about 36073.6930601789. The cubic root of 1301311331 is about 1091.7597282850.

Adding to 1301311331 its reverse (1331131031), we get a palindrome (2632442362).

The spelling of 1301311331 in words is "one billion, three hundred one million, three hundred eleven thousand, three hundred thirty-one".