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164031023 = 1312617771
BaseRepresentation
bin10011100011011…
…10101000101111
3102102122122021002
421301232220233
5313442443043
624135430515
74031145362
oct1161565057
9372578232
10164031023
1184655a32
1246b2543b
1327ca24a0
1417adc0d9
15e601bb8
hex9c6ea2f

164031023 has 4 divisors (see below), whose sum is σ = 176648808. Its totient is φ = 151413240.

The previous prime is 164031001. The next prime is 164031029. The reversal of 164031023 is 320130461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320130461 = 745732923.

It is a cyclic number.

It is not a de Polignac number, because 164031023 - 26 = 164030959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164030986 and 164031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164031029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6308873 + ... + 6308898.

It is an arithmetic number, because the mean of its divisors is an integer number (44162202).

Almost surely, 2164031023 is an apocalyptic number.

164031023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164031023 is a deficient number, since it is larger than the sum of its proper divisors (12617785).

164031023 is a wasteful number, since it uses less digits than its factorization.

164031023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12617784.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 164031023 is about 12807.4596622437. The cubic root of 164031023 is about 547.4048796755.

Adding to 164031023 its reverse (320130461), we get a palindrome (484161484).

The spelling of 164031023 in words is "one hundred sixty-four million, thirty-one thousand, twenty-three".

Divisors: 1 13 12617771 164031023