1311013 has 4 divisors (see below), whose sum is σ = 1430208. Its totient is φ = 1191820.

The previous prime is 1311001. The next prime is 1311029. The reversal of 1311013 is 3101131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3101131 = 11 ⋅281921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311043) 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, 59581 + ... + 59602.

It is an arithmetic number, because the mean of its divisors is an integer number (357552).

2^1311013 is an apocalyptic number.

It is an amenable number.

1311013 is a deficient number, since it is larger than the sum of its proper divisors (119195).

1311013 is a wasteful number, since it uses less digits than its factorization.

1311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119194.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 1311013 is about 1144.9947598133. The cubic root of 1311013 is about 109.4466146502.

Adding to 1311013 its reverse (3101131), we get a palindrome (4412144).

It can be divided in two parts, 13 and 11013, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 1311013 in words is "one million, three hundred eleven thousand, thirteen".