1381333235 has 4 divisors (see below), whose sum is σ = 1657599888. Its totient is φ = 1105066584.

The previous prime is 1381333207. The next prime is 1381333237. The reversal of 1381333235 is 5323331831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5323331831 = 3769 ⋅1412399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381333235 is a prime.

It is a super-2 number, since 2×1381333235² = 3816163012231130450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381333237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138133319 + ... + 138133328.

It is an arithmetic number, because the mean of its divisors is an integer number (414399972).

Almost surely, 2^1381333235 is an apocalyptic number.

1381333235 is a deficient number, since it is larger than the sum of its proper divisors (276266653).

1381333235 is an equidigital number, since it uses as much as digits as its factorization.

1381333235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276266652.

The product of its digits is 19440, while the sum is 32.

The square root of 1381333235 is about 37166.2916498270. The cubic root of 1381333235 is about 1113.6947020864.

The spelling of 1381333235 in words is "one billion, three hundred eighty-one million, three hundred thirty-three thousand, two hundred thirty-five".