1338286031 has 4 divisors (see below), whose sum is σ = 1339837632. Its totient is φ = 1336734432.

The previous prime is 1338286021. The next prime is 1338286039. The reversal of 1338286031 is 1306828331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1306828331 = 227 ⋅5756953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338286031 is a prime.

It is a super-2 number, since 2×1338286031² = 3582019001539465922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1338285982 and 1338286000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338286039) 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, 774506 + ... + 776231.

It is an arithmetic number, because the mean of its divisors is an integer number (334959408).

Almost surely, 2^1338286031 is an apocalyptic number.

1338286031 is a deficient number, since it is larger than the sum of its proper divisors (1551601).

1338286031 is an equidigital number, since it uses as much as digits as its factorization.

1338286031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551600.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1338286031 is about 36582.5919120010. The cubic root of 1338286031 is about 1102.0035196851.

The spelling of 1338286031 in words is "one billion, three hundred thirty-eight million, two hundred eighty-six thousand, thirty-one".