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153170831 = 1113924621
BaseRepresentation
bin10010010000100…
…11001110001111
3101200012212212202
421020103032033
5303202431311
623110552115
73536634122
oct1110231617
9350185782
10153170831
1179508570
124336863b
132596c238
14164b23b9
15d6a8e3b
hex921338f

153170831 has 4 divisors (see below), whose sum is σ = 167095464. Its totient is φ = 139246200.

The previous prime is 153170813. The next prime is 153170839. The reversal of 153170831 is 138071351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138071351 = 1112551941.

It is a cyclic number.

It is not a de Polignac number, because 153170831 - 26 = 153170767 is a prime.

It is a super-2 number, since 2×1531708312 = 46922606938461122, 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 = 153170794 and 153170803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153170839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6962300 + ... + 6962321.

It is an arithmetic number, because the mean of its divisors is an integer number (41773866).

Almost surely, 2153170831 is an apocalyptic number.

153170831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

153170831 is a deficient number, since it is larger than the sum of its proper divisors (13924633).

153170831 is a wasteful number, since it uses less digits than its factorization.

153170831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13924632.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 153170831 is about 12376.2203842692. The cubic root of 153170831 is about 535.0471103011.

The spelling of 153170831 in words is "one hundred fifty-three million, one hundred seventy thousand, eight hundred thirty-one".

Divisors: 1 11 13924621 153170831