383648431 has 2 divisors, whose sum is σ = 383648432. Its totient is φ = 383648430.

The previous prime is 383648423. The next prime is 383648443. The reversal of 383648431 is 134846383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 383648431 - 2³ = 383648423 is a prime.

It is a super-4 number, since 4×383648431⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383648471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191824215 + 191824216.

It is an arithmetic number, because the mean of its divisors is an integer number (191824216).

Almost surely, 2^383648431 is an apocalyptic number.

383648431 is a deficient number, since it is larger than the sum of its proper divisors (1).

383648431 is an equidigital number, since it uses as much as digits as its factorization.

383648431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The square root of 383648431 is about 19586.9454229086. The cubic root of 383648431 is about 726.6263488231.

The spelling of 383648431 in words is "three hundred eighty-three million, six hundred forty-eight thousand, four hundred thirty-one".