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130312457 = 11232917761
BaseRepresentation
bin1111100010001…
…10100100001001
3100002012120002022
413301012210021
5231324444312
620533014225
73141431462
oct761064411
9302176068
10130312457
1167615750
1237784375
1320cc7a82
1413441d69
15b691172
hex7c46909

130312457 has 16 divisors (see below), whose sum is σ = 153463680. Its totient is φ = 109401600.

The previous prime is 130312453. The next prime is 130312459. The reversal of 130312457 is 754213031.

It is not a de Polignac number, because 130312457 - 22 = 130312453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130312451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1544 + ... + 16217.

It is an arithmetic number, because the mean of its divisors is an integer number (9591480).

Almost surely, 2130312457 is an apocalyptic number.

It is an amenable number.

130312457 is a deficient number, since it is larger than the sum of its proper divisors (23151223).

130312457 is a wasteful number, since it uses less digits than its factorization.

130312457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17824.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 130312457 is about 11415.4481734183. The cubic root of 130312457 is about 506.9852345511.

Adding to 130312457 its reverse (754213031), we get a palindrome (884525488).

The spelling of 130312457 in words is "one hundred thirty million, three hundred twelve thousand, four hundred fifty-seven".

Divisors: 1 11 23 29 253 319 667 7337 17761 195371 408503 515069 4493533 5665759 11846587 130312457