214920631 has 4 divisors (see below), whose sum is σ = 215055000. Its totient is φ = 214786264.

The previous prime is 214920623. The next prime is 214920637. The reversal of 214920631 is 136029412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 214920631 - 2³ = 214920623 is a prime.

It is a super-2 number, since 2×214920631² = 92381755258876322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214920631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214920637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64756 + ... + 67993.

It is an arithmetic number, because the mean of its divisors is an integer number (53763750).

Almost surely, 2^214920631 is an apocalyptic number.

214920631 is a deficient number, since it is larger than the sum of its proper divisors (134369).

214920631 is a wasteful number, since it uses less digits than its factorization.

214920631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134368.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 214920631 is about 14660.1715883546. The cubic root of 214920631 is about 598.9989149026.

The spelling of 214920631 in words is "two hundred fourteen million, nine hundred twenty thousand, six hundred thirty-one".