1313040038 has 4 divisors (see below), whose sum is σ = 1969560060. Its totient is φ = 656520018.

The previous prime is 1313040037. The next prime is 1313040041. The reversal of 1313040038 is 8300403131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8300403131 = 83 ⋅100004857.

It is a junction number, because it is equal to n+sod(n) for n = 1313039995 and 1313040022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313040037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328260008 + ... + 328260011.

It is an arithmetic number, because the mean of its divisors is an integer number (492390015).

Almost surely, 2^1313040038 is an apocalyptic number.

1313040038 is a deficient number, since it is larger than the sum of its proper divisors (656520022).

1313040038 is an equidigital number, since it uses as much as digits as its factorization.

1313040038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656520021.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1313040038 is about 36235.8943314499. The cubic root of 1313040038 is about 1095.0299298895.

Adding to 1313040038 its reverse (8300403131), we get a palindrome (9613443169).

The spelling of 1313040038 in words is "one billion, three hundred thirteen million, forty thousand, thirty-eight".