381131711 has 8 divisors (see below), whose sum is σ = 390251184. Its totient is φ = 372113280.

The previous prime is 381131693. The next prime is 381131713. The reversal of 381131711 is 117131183.

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 381131711 - 2¹⁴ = 381115327 is a prime.

It is a super-2 number, since 2×381131711² = 290522762259575042, which 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 (381131713) 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, 17600 + ... + 32741.

It is an arithmetic number, because the mean of its divisors is an integer number (48781398).

Almost surely, 2^381131711 is an apocalyptic number.

381131711 is a deficient number, since it is larger than the sum of its proper divisors (9119473).

381131711 is a wasteful number, since it uses less digits than its factorization.

381131711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50521.

The product of its digits is 504, while the sum is 26.

The square root of 381131711 is about 19522.5948838775. The cubic root of 381131711 is about 725.0339808092.

Adding to 381131711 its reverse (117131183), we get a palindrome (498262894).

The spelling of 381131711 in words is "three hundred eighty-one million, one hundred thirty-one thousand, seven hundred eleven".