214031391 has 16 divisors (see below), whose sum is σ = 326519808. Its totient is φ = 122162400.

The previous prime is 214031369. The next prime is 214031393. The reversal of 214031391 is 193130412.

It is not a de Polignac number, because 214031391 - 2⁵ = 214031359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214031393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14346 + ... + 25176.

It is an arithmetic number, because the mean of its divisors is an integer number (20407488).

Almost surely, 2^214031391 is an apocalyptic number.

214031391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

214031391 is a deficient number, since it is larger than the sum of its proper divisors (112488417).

214031391 is a wasteful number, since it uses less digits than its factorization.

214031391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11782.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 214031391 is about 14629.8117212765. The cubic root of 214031391 is about 598.1716480970.

The spelling of 214031391 in words is "two hundred fourteen million, thirty-one thousand, three hundred ninety-one".