1313405542 has 4 divisors (see below), whose sum is σ = 1970108316. Its totient is φ = 656702770.

The previous prime is 1313405507. The next prime is 1313405543. The reversal of 1313405542 is 2455043131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2455043131 = 97 ⋅25309723.

It is a self number, because there is not a number n which added to its sum of digits gives 1313405542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313405543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328351384 + ... + 328351387.

It is an arithmetic number, because the mean of its divisors is an integer number (492527079).

Almost surely, 2^1313405542 is an apocalyptic number.

1313405542 is a deficient number, since it is larger than the sum of its proper divisors (656702774).

1313405542 is an equidigital number, since it uses as much as digits as its factorization.

1313405542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656702773.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1313405542 is about 36240.9373775017. The cubic root of 1313405542 is about 1095.1315263568.

Adding to 1313405542 its reverse (2455043131), we get a palindrome (3768448673).

The spelling of 1313405542 in words is "one billion, three hundred thirteen million, four hundred five thousand, five hundred forty-two".