107021391 has 8 divisors (see below), whose sum is σ = 142747440. Its totient is φ = 71321472.

The previous prime is 107021371. The next prime is 107021437. The reversal of 107021391 is 193120701.

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

It is not a de Polignac number, because 107021391 - 2⁵ = 107021359 is a prime.

It is a super-3 number, since 3×107021391³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107021351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7081 + ... + 16253.

It is an arithmetic number, because the mean of its divisors is an integer number (17843430).

Almost surely, 2^107021391 is an apocalyptic number.

107021391 is a deficient number, since it is larger than the sum of its proper divisors (35726049).

107021391 is an equidigital number, since it uses as much as digits as its factorization.

107021391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13065.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 107021391 is about 10345.1143541287. The cubic root of 107021391 is about 474.7775741631. Note that the first 3 decimals are identical.

The spelling of 107021391 in words is "one hundred seven million, twenty-one thousand, three hundred ninety-one".