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130524631 = 1271027753
BaseRepresentation
bin1111100011110…
…10010111010111
3100002121100010121
413301322113113
5231403242011
620541332411
73143304166
oct761722727
9302540117
10130524631
11677500a6
1237867107
1321070513
14134993dd
15b6d3e71
hex7c7a5d7

130524631 has 4 divisors (see below), whose sum is σ = 131552512. Its totient is φ = 129496752.

The previous prime is 130524613. The next prime is 130524649. The reversal of 130524631 is 136425031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136425031 = 373687163.

It is an interprime number because it is at equal distance from previous prime (130524613) and next prime (130524649).

It is a cyclic number.

It is not a de Polignac number, because 130524631 - 25 = 130524599 is a prime.

It is a super-2 number, since 2×1305246312 = 34073358595372322, 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 = 130524596 and 130524605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130524131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513750 + ... + 514003.

It is an arithmetic number, because the mean of its divisors is an integer number (32888128).

Almost surely, 2130524631 is an apocalyptic number.

130524631 is a deficient number, since it is larger than the sum of its proper divisors (1027881).

130524631 is a wasteful number, since it uses less digits than its factorization.

130524631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027880.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 130524631 is about 11424.7376775137. The cubic root of 130524631 is about 507.2602421732.

Adding to 130524631 its reverse (136425031), we get a palindrome (266949662).

The spelling of 130524631 in words is "one hundred thirty million, five hundred twenty-four thousand, six hundred thirty-one".

Divisors: 1 127 1027753 130524631