214540431 has 16 divisors (see below), whose sum is σ = 327264000. Its totient is φ = 122465088.

The previous prime is 214540411. The next prime is 214540433. The reversal of 214540431 is 134045412.

It is not a de Polignac number, because 214540431 - 2⁵ = 214540399 is a prime.

It is a super-2 number, since 2×214540431² = 92055193067331522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214540433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17160 + ... + 26898.

It is an arithmetic number, because the mean of its divisors is an integer number (20454000).

Almost surely, 2^214540431 is an apocalyptic number.

214540431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

214540431 is a deficient number, since it is larger than the sum of its proper divisors (112723569).

214540431 is a wasteful number, since it uses less digits than its factorization.

214540431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10798.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 214540431 is about 14647.1987424217. The cubic root of 214540431 is about 598.6454917020.

Adding to 214540431 its reverse (134045412), we get a palindrome (348585843).

The spelling of 214540431 in words is "two hundred fourteen million, five hundred forty thousand, four hundred thirty-one".