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131135632 = 248195977
BaseRepresentation
bin1111101000011…
…11100010010000
3100010202101021021
413310033202100
5232032320012
621002405224
73151430425
oct764174220
9303671237
10131135632
1168028161
1237b00814
1321225664
14135b7d4c
15b7a5007
hex7d0f890

131135632 has 10 divisors (see below), whose sum is σ = 254075318. Its totient is φ = 65567808.

The previous prime is 131135623. The next prime is 131135633. The reversal of 131135632 is 236531131.

It can be written as a sum of positive squares in only one way, i.e., 71166096 + 59969536 = 8436^2 + 7744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131135597 and 131135606.

It is not an unprimeable number, because it can be changed into a prime (131135633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097973 + ... + 4098004.

Almost surely, 2131135632 is an apocalyptic number.

It is an amenable number.

131135632 is a deficient number, since it is larger than the sum of its proper divisors (122939686).

131135632 is an equidigital number, since it uses as much as digits as its factorization.

131135632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8195985 (or 8195979 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 131135632 is about 11451.4467208296. The cubic root of 131135632 is about 508.0505250757.

Adding to 131135632 its reverse (236531131), we get a palindrome (367666763).

The spelling of 131135632 in words is "one hundred thirty-one million, one hundred thirty-five thousand, six hundred thirty-two".

Divisors: 1 2 4 8 16 8195977 16391954 32783908 65567816 131135632