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214220031 = 3471519291
BaseRepresentation
bin11001100010010…
…11110011111111
3112221002111122020
430301023303333
5414320020111
633131251223
75210561124
oct1461136377
9487074566
10214220031
11aaa15753
125b8a9b13
13354c591c
142064474b
1513c17906
hexcc4bcff

214220031 has 8 divisors (see below), whose sum is σ = 291704064. Its totient is φ = 139774680.

The previous prime is 214220029. The next prime is 214220053. The reversal of 214220031 is 130022412.

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

It is not a de Polignac number, because 214220031 - 21 = 214220029 is a prime.

It is a super-2 number, since 2×2142200312 = 91780443363281922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214220021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759505 + ... + 759786.

It is an arithmetic number, because the mean of its divisors is an integer number (36463008).

Almost surely, 2214220031 is an apocalyptic number.

214220031 is a deficient number, since it is larger than the sum of its proper divisors (77484033).

214220031 is a wasteful number, since it uses less digits than its factorization.

214220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519341.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 214220031 is about 14636.2574109640. The cubic root of 214220031 is about 598.3473325523.

Adding to 214220031 its reverse (130022412), we get a palindrome (344242443).

The spelling of 214220031 in words is "two hundred fourteen million, two hundred twenty thousand, thirty-one".

Divisors: 1 3 47 141 1519291 4557873 71406677 214220031