381127818631 has 8 divisors (see below), whose sum is σ = 437763468800. Its totient is φ = 325039373208.

The previous prime is 381127818623. The next prime is 381127818661. The reversal of 381127818631 is 136818721183.

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

It is a cyclic number.

It is not a de Polignac number, because 381127818631 - 2³ = 381127818623 is a prime.

It is a super-2 number, since 2×381127818631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381127818661) 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, 136799691 + ... + 136802476.

It is an arithmetic number, because the mean of its divisors is an integer number (54720433600).

Almost surely, 2^381127818631 is an apocalyptic number.

381127818631 is a deficient number, since it is larger than the sum of its proper divisors (56635650169).

381127818631 is a wasteful number, since it uses less digits than its factorization.

381127818631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273602373.

The product of its digits is 387072, while the sum is 49.

The spelling of 381127818631 in words is "three hundred eighty-one billion, one hundred twenty-seven million, eight hundred eighteen thousand, six hundred thirty-one".