1381312033 has 8 divisors (see below), whose sum is σ = 1470739680. Its totient is φ = 1292792640.

The previous prime is 1381312007. The next prime is 1381312061. The reversal of 1381312033 is 3302131831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381312033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1381311989 and 1381312007.

It is not an unprimeable number, because it can be changed into a prime (1381312433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223923 + ... + 230008.

It is an arithmetic number, because the mean of its divisors is an integer number (183842460).

Almost surely, 2^1381312033 is an apocalyptic number.

It is an amenable number.

1381312033 is a deficient number, since it is larger than the sum of its proper divisors (89427647).

1381312033 is a wasteful number, since it uses less digits than its factorization.

1381312033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454127.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1381312033 is about 37166.0064171549. The cubic root of 1381312033 is about 1113.6890040465.

Adding to 1381312033 its reverse (3302131831), we get a palindrome (4683443864).

The spelling of 1381312033 in words is "one billion, three hundred eighty-one million, three hundred twelve thousand, thirty-three".