Search a number
-
+
131065715 = 5118328711
BaseRepresentation
bin1111100111111…
…10011101110011
3100010121211100202
413303332131303
5232023100330
621001105415
73151016534
oct763763563
9303554322
10131065715
1167a8a680
1237a8826b
13211cc8a1
141359a68b
15b78e445
hex7cfe773

131065715 has 16 divisors (see below), whose sum is σ = 173650176. Its totient is φ = 94168800.

The previous prime is 131065709. The next prime is 131065757. The reversal of 131065715 is 517560131.

It is not a de Polignac number, because 131065715 - 222 = 126871411 is a prime.

It is a super-2 number, since 2×1310657152 = 34356443296922450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9791 + ... + 18920.

It is an arithmetic number, because the mean of its divisors is an integer number (10853136).

Almost surely, 2131065715 is an apocalyptic number.

131065715 is a deficient number, since it is larger than the sum of its proper divisors (42584461).

131065715 is a wasteful number, since it uses less digits than its factorization.

131065715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28810.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 131065715 is about 11448.3935554295. The cubic root of 131065715 is about 507.9602173467.

The spelling of 131065715 in words is "one hundred thirty-one million, sixty-five thousand, seven hundred fifteen".

Divisors: 1 5 11 55 83 415 913 4565 28711 143555 315821 1579105 2383013 11915065 26213143 131065715