214163531 has 16 divisors (see below), whose sum is σ = 226560768. Its totient is φ = 202176000.

The previous prime is 214163519. The next prime is 214163533. The reversal of 214163531 is 135361412.

It is a cyclic number.

It is not a de Polignac number, because 214163531 - 2²⁶ = 147054667 is a prime.

It is a super-2 number, since 2×214163531² = 91732036020775922, 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 214163531.

It is not an unprimeable number, because it can be changed into a prime (214163533) 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, 228095 + ... + 229031.

It is an arithmetic number, because the mean of its divisors is an integer number (14160048).

Almost surely, 2^214163531 is an apocalyptic number.

214163531 is a deficient number, since it is larger than the sum of its proper divisors (12397237).

214163531 is a wasteful number, since it uses less digits than its factorization.

214163531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its digits is 2160, while the sum is 26.

The square root of 214163531 is about 14634.3271454481. The cubic root of 214163531 is about 598.2947237203.

The spelling of 214163531 in words is "two hundred fourteen million, one hundred sixty-three thousand, five hundred thirty-one".