1311024413 has 4 divisors (see below), whose sum is σ = 1311302400. Its totient is φ = 1310746428.

The previous prime is 1311024409. The next prime is 1311024419. The reversal of 1311024413 is 3144201131.

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: 3144201131 = 23 ⋅136704397.

It is a cyclic number.

It is not a de Polignac number, because 1311024413 - 2² = 1311024409 is a prime.

It is a super-2 number, since 2×1311024413² = 3437570022963989138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311024419) 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, 131795 + ... + 141392.

It is an arithmetic number, because the mean of its divisors is an integer number (327825600).

Almost surely, 2^1311024413 is an apocalyptic number.

It is an amenable number.

1311024413 is a deficient number, since it is larger than the sum of its proper divisors (277987).

1311024413 is an equidigital number, since it uses as much as digits as its factorization.

1311024413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277986.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1311024413 is about 36208.0711030013. The cubic root of 1311024413 is about 1094.4693224445.

Adding to 1311024413 its reverse (3144201131), we get a palindrome (4455225544).

The spelling of 1311024413 in words is "one billion, three hundred eleven million, twenty-four thousand, four hundred thirteen".