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157682031 = 3134043129
BaseRepresentation
bin10010110011000…
…00100101101111
3101222201002002020
421121200211233
5310331311111
623351401223
73623163243
oct1131404557
9358632066
10157682031
1181009931
1244983213
132688b6a0
1416d28423
15dc9a906
hex966096f

157682031 has 8 divisors (see below), whose sum is σ = 226415280. Its totient is φ = 97035072.

The previous prime is 157682029. The next prime is 157682033. The reversal of 157682031 is 130286751.

157682031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (157682029) and next prime (157682033).

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

It is not a de Polignac number, because 157682031 - 21 = 157682029 is a prime.

It is a super-2 number, since 2×1576820312 = 49727245800569922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157681983 and 157682001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157682033) 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, 2021526 + ... + 2021603.

It is an arithmetic number, because the mean of its divisors is an integer number (28301910).

Almost surely, 2157682031 is an apocalyptic number.

157682031 is a deficient number, since it is larger than the sum of its proper divisors (68733249).

157682031 is a wasteful number, since it uses less digits than its factorization.

157682031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043145.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 157682031 is about 12557.1505923916. The cubic root of 157682031 is about 540.2491203085.

The spelling of 157682031 in words is "one hundred fifty-seven million, six hundred eighty-two thousand, thirty-one".

Divisors: 1 3 13 39 4043129 12129387 52560677 157682031