1383752231 has 4 divisors (see below), whose sum is σ = 1390776552. Its totient is φ = 1376727912.

The previous prime is 1383752221. The next prime is 1383752257. The reversal of 1383752231 is 1322573831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322573831 = 19 ⋅69609149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1383752231 is a prime.

It is a super-2 number, since 2×1383752231² = 3829540473594954722, 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 = 1383752191 and 1383752200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383752221) 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, 3511865 + ... + 3512258.

It is an arithmetic number, because the mean of its divisors is an integer number (347694138).

Almost surely, 2^1383752231 is an apocalyptic number.

1383752231 is a deficient number, since it is larger than the sum of its proper divisors (7024321).

1383752231 is an equidigital number, since it uses as much as digits as its factorization.

1383752231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7024320.

The product of its digits is 30240, while the sum is 35.

The square root of 1383752231 is about 37198.8202904339. The cubic root of 1383752231 is about 1114.3444250968.

The spelling of 1383752231 in words is "one billion, three hundred eighty-three million, seven hundred fifty-two thousand, two hundred thirty-one".