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163001031 = 3971134957
BaseRepresentation
bin10011011011100…
…11001011000111
3102100201022101020
421231303023013
5313212013111
624101402223
74016325444
oct1155631307
9370638336
10163001031
11840120a6
1246709373
1327a0171b
14179109cb
15e49b906
hex9b732c7

163001031 has 16 divisors (see below), whose sum is σ = 221563104. Its totient is φ = 106573824.

The previous prime is 163000993. The next prime is 163001039. The reversal of 163001031 is 130100361.

It is not a de Polignac number, because 163001031 - 210 = 163000007 is a prime.

It is a super-2 number, since 2×1630010312 = 53138672214125922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163001031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163001039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30405 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (13847694).

Almost surely, 2163001031 is an apocalyptic number.

163001031 is a deficient number, since it is larger than the sum of its proper divisors (58562073).

163001031 is a wasteful number, since it uses less digits than its factorization.

163001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 163001031 is about 12767.1857118161. The cubic root of 163001031 is about 546.2567088424.

Adding to 163001031 its reverse (130100361), we get a palindrome (293101392).

The spelling of 163001031 in words is "one hundred sixty-three million, one thousand, thirty-one".

Divisors: 1 3 97 113 291 339 4957 10961 14871 32883 480829 560141 1442487 1680423 54333677 163001031