84031381 has 8 divisors (see below), whose sum is σ = 96681600. Its totient is φ = 71542608.

The previous prime is 84031379. The next prime is 84031429. The reversal of 84031381 is 18313048.

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 84031381 - 2¹ = 84031379 is a prime.

It is a super-2 number, since 2×84031381² = 14122545985534322, 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 (84031361) 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, 39241 + ... + 41326.

It is an arithmetic number, because the mean of its divisors is an integer number (12085200).

Almost surely, 2^84031381 is an apocalyptic number.

It is an amenable number.

84031381 is a deficient number, since it is larger than the sum of its proper divisors (12650219).

84031381 is a wasteful number, since it uses less digits than its factorization.

84031381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80723.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 84031381 is about 9166.8632039537. The cubic root of 84031381 is about 438.0064443774.

The spelling of 84031381 in words is "eighty-four million, thirty-one thousand, three hundred eighty-one".