381485443431 has 8 divisors (see below), whose sum is σ = 513891044464. Its totient is φ = 251701735680.

The previous prime is 381485443411. The next prime is 381485443447. The reversal of 381485443431 is 134344584183.

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

It is not a de Polignac number, because 381485443431 - 2⁷ = 381485443303 is a prime.

It is a super-2 number, since 2×381485443431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381485443411) 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, 655472980 + ... + 655473561.

It is an arithmetic number, because the mean of its divisors is an integer number (64236380558).

Almost surely, 2^381485443431 is an apocalyptic number.

381485443431 is a deficient number, since it is larger than the sum of its proper divisors (132405601033).

381485443431 is a wasteful number, since it uses less digits than its factorization.

381485443431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310946641.

The product of its digits is 2211840, while the sum is 48.

The spelling of 381485443431 in words is "three hundred eighty-one billion, four hundred eighty-five million, four hundred forty-three thousand, four hundred thirty-one".