10172381 has 8 divisors (see below), whose sum is σ = 10474464. Its totient is φ = 9873360.

The previous prime is 10172377. The next prime is 10172389. The reversal of 10172381 is 18327101.

It is a happy number.

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 10172381 - 2² = 10172377 is a prime.

It is a super-2 number, since 2×10172381² = 206954670418322, 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 (10172389) 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, 7130 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (1309308).

Almost surely, 2^10172381 is an apocalyptic number.

It is an amenable number.

10172381 is a deficient number, since it is larger than the sum of its proper divisors (302083).

10172381 is a wasteful number, since it uses less digits than its factorization.

10172381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 10172381 is about 3189.4170313711. The cubic root of 10172381 is about 216.6743684310.

Adding to 10172381 its reverse (18327101), we get a palindrome (28499482).

The spelling of 10172381 in words is "ten million, one hundred seventy-two thousand, three hundred eighty-one".