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130111537 = 167779111
BaseRepresentation
bin1111100000101…
…01100000110001
3100001211100110211
413300111200301
5231302032122
620524424121
73136633633
oct760254061
9301740424
10130111537
11674987a6
12376a8041
1320c5749a
14133cca53
15b651877
hex7c15831

130111537 has 4 divisors (see below), whose sum is σ = 130890816. Its totient is φ = 129332260.

The previous prime is 130111493. The next prime is 130111543. The reversal of 130111537 is 735111031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130111537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130111577) 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, 389389 + ... + 389722.

It is an arithmetic number, because the mean of its divisors is an integer number (32722704).

Almost surely, 2130111537 is an apocalyptic number.

It is an amenable number.

130111537 is a deficient number, since it is larger than the sum of its proper divisors (779279).

130111537 is an equidigital number, since it uses as much as digits as its factorization.

130111537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779278.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 130111537 is about 11406.6444233175. The cubic root of 130111537 is about 506.7245383938.

Adding to 130111537 its reverse (735111031), we get a palindrome (865222568).

The spelling of 130111537 in words is "one hundred thirty million, one hundred eleven thousand, five hundred thirty-seven".

Divisors: 1 167 779111 130111537