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1380617023 = 31157283669
BaseRepresentation
bin101001001001010…
…1000101100111111
310120012212121111211
41102102220230333
510311414221043
6344555225251
746133023342
oct12222505477
93505777454
101380617023
11649360005
12326448227
13190053166
14d1508459
1581316a9d
hex524a8b3f

1380617023 has 8 divisors (see below), whose sum is σ = 1434235520. Its totient is φ = 1327566240.

The previous prime is 1380617011. The next prime is 1380617027. The reversal of 1380617023 is 3207160831.

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

It is a cyclic number.

It is not a de Polignac number, because 1380617023 - 221 = 1378519871 is a prime.

It is a super-2 number, since 2×13806170232 = 3812206728394765058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380617027) 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, 136968 + ... + 146701.

It is an arithmetic number, because the mean of its divisors is an integer number (179279440).

Almost surely, 21380617023 is an apocalyptic number.

1380617023 is a deficient number, since it is larger than the sum of its proper divisors (53618497).

1380617023 is a wasteful number, since it uses less digits than its factorization.

1380617023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283857.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1380617023 is about 37156.6551643175. The cubic root of 1380617023 is about 1113.5021877371.

Adding to 1380617023 its reverse (3207160831), we get a palindrome (4587777854).

The spelling of 1380617023 in words is "one billion, three hundred eighty million, six hundred seventeen thousand, twenty-three".

Divisors: 1 31 157 4867 283669 8793739 44536033 1380617023