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163234031 = 211787983
BaseRepresentation
bin10011011101011…
…00000011101111
3102101011010222212
421232230003233
5313241442111
624110401035
74021315652
oct1156540357
9371133885
10163234031
1184161164
124680017b
1327a837ac
1417971899
15e4e598b
hex9bac0ef

163234031 has 8 divisors (see below), whose sum is σ = 164383104. Its totient is φ = 162088920.

The previous prime is 163234009. The next prime is 163234033. The reversal of 163234031 is 130432361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-163234031 is a prime.

It is a super-2 number, since 2×1632340312 = 53290697753017922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163233988 and 163234006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163234033) 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, 165566 + ... + 166548.

It is an arithmetic number, because the mean of its divisors is an integer number (20547888).

Almost surely, 2163234031 is an apocalyptic number.

163234031 is a deficient number, since it is larger than the sum of its proper divisors (1149073).

163234031 is an equidigital number, since it uses as much as digits as its factorization.

163234031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 163234031 is about 12776.3074086373. The cubic root of 163234031 is about 546.5168651028.

Adding to 163234031 its reverse (130432361), we get a palindrome (293666392).

The spelling of 163234031 in words is "one hundred sixty-three million, two hundred thirty-four thousand, thirty-one".

Divisors: 1 211 787 983 166057 207413 773621 163234031