1313819242 has 4 divisors (see below), whose sum is σ = 1970728866. Its totient is φ = 656909620.

The previous prime is 1313819231. The next prime is 1313819261. The reversal of 1313819242 is 2429183131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 861363801 + 452455441 = 29349^2 + 21271^2 .

It is a super-2 number, since 2×1313819242² = 3452242001298909128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313819198 and 1313819207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328454809 + ... + 328454812.

Almost surely, 2^1313819242 is an apocalyptic number.

1313819242 is a deficient number, since it is larger than the sum of its proper divisors (656909624).

1313819242 is an equidigital number, since it uses as much as digits as its factorization.

1313819242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656909623.

The product of its digits is 10368, while the sum is 34.

The square root of 1313819242 is about 36246.6445619453. The cubic root of 1313819242 is about 1095.2464967748.

The spelling of 1313819242 in words is "one billion, three hundred thirteen million, eight hundred nineteen thousand, two hundred forty-two".