1311422743 has 8 divisors (see below), whose sum is σ = 1337904000. Its totient is φ = 1285202688.

The previous prime is 1311422741. The next prime is 1311422747. The reversal of 1311422743 is 3472241131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311422743 - 2¹ = 1311422741 is a prime.

It is a super-2 number, since 2×1311422743² = 3439659221715288098, 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 (1311422741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55143 + ... + 75256.

It is an arithmetic number, because the mean of its divisors is an integer number (167238000).

Almost surely, 2^1311422743 is an apocalyptic number.

1311422743 is a deficient number, since it is larger than the sum of its proper divisors (26481257).

1311422743 is a wasteful number, since it uses less digits than its factorization.

1311422743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130601.

The product of its digits is 4032, while the sum is 28.

The square root of 1311422743 is about 36213.5712544344. The cubic root of 1311422743 is about 1094.5801558294.

Adding to 1311422743 its reverse (3472241131), we get a palindrome (4783663874).

The spelling of 1311422743 in words is "one billion, three hundred eleven million, four hundred twenty-two thousand, seven hundred forty-three".