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232120231 = 753625661
BaseRepresentation
bin11011101010111…
…01111110100111
3121011202221002121
431311131332213
5433410321411
635011050411
75515663240
oct1565357647
9534687077
10232120231
1110a031402
12658a0a07
1339122365
1422b83cc7
15155a1571
hexdd5dfa7

232120231 has 8 divisors (see below), whose sum is σ = 270285984. Its totient is φ = 195205920.

The previous prime is 232120223. The next prime is 232120241. The reversal of 232120231 is 132021232.

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

It is not a de Polignac number, because 232120231 - 23 = 232120223 is a prime.

It is a super-2 number, since 2×2321202312 = 107759603278986722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232120201) 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, 312460 + ... + 313201.

It is an arithmetic number, because the mean of its divisors is an integer number (33785748).

Almost surely, 2232120231 is an apocalyptic number.

232120231 is a deficient number, since it is larger than the sum of its proper divisors (38165753).

232120231 is an equidigital number, since it uses as much as digits as its factorization.

232120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625721.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 232120231 is about 15235.4924764512. The cubic root of 232120231 is about 614.5694927040.

Adding to 232120231 its reverse (132021232), we get a palindrome (364141463).

The spelling of 232120231 in words is "two hundred thirty-two million, one hundred twenty thousand, two hundred thirty-one".

Divisors: 1 7 53 371 625661 4379627 33160033 232120231