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130000023 = 3243333359
BaseRepresentation
bin1111011111110…
…10010010010111
3100001121200111200
413233322102113
5231240000043
620522203543
73135660546
oct757722227
9301550450
10130000023
1167421a3a
12376535b3
1320c187ba
14133a015d
15b62d7d3
hex7bfa497

130000023 has 12 divisors (see below), whose sum is σ = 188217120. Its totient is φ = 86463936.

The previous prime is 130000009. The next prime is 130000027. The reversal of 130000023 is 320000031.

It is a happy number.

It is not a de Polignac number, because 130000023 - 24 = 130000007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130000027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12783 + ... + 20576.

It is an arithmetic number, because the mean of its divisors is an integer number (15684760).

Almost surely, 2130000023 is an apocalyptic number.

130000023 is a deficient number, since it is larger than the sum of its proper divisors (58217097).

130000023 is a wasteful number, since it uses less digits than its factorization.

130000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33798 (or 33795 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 130000023 is about 11401.7552596081. The cubic root of 130000023 is about 506.5797317853.

Adding to 130000023 its reverse (320000031), we get a palindrome (450000054).

The spelling of 130000023 in words is "one hundred thirty million, twenty-three", and thus it is an aban number.

Divisors: 1 3 9 433 1299 3897 33359 100077 300231 14444447 43333341 130000023